concurring:
I concur in the result reached by Judge Wilkey. I also concur generally in his opinion. In reaching the same conclusion, however, I have followed the course now stated, which is similar to but somewhat different from that adopted by Judge Wilkey.
Rule 41(c) of the F.R.Crim.P., when each of the search warrants in these cases was issued, provided as follows with respect to issuance and contents:
The warrant shall direct that it be served in the daytime, but if the affidavits [establishing the grounds for issuing the warrant] are positive that the property is on the person or in the place to be searched, the warrant may direct that it may be served at any time ....
Subparagraph (g) of the Rule provided:
This rule does not modify any act, inconsistent with it, regulating search, seizure and the issuance and execution of search warrants in circumstances for which special provision is made. . . .
Special provision was made by former section 1405 of Title 18 of the United States Code1 for any ease involving specified violations of the federal narcotics laws.2 United States v. Stallings, 413 F.2d 200 (7th Cir.), cert. denied, 396 U.S. 972, 90 S.Ct. 460, 24 L.Ed.2d 440 (1969); United States v. Tucker, 262 F.Supp. 305 (S.D.N.Y.1966). In such cases section 1405(1) provided:
a search warrant may be served at any time of the day or night if the judge or the United States Commissioner issuing the warrant is satisfied that there is probable cause to believe that the grounds for the application exist. .
The Managers on the part of the House, in referring to section 1405, stated that the restrictions governing the issuance of night search warrants are thus liberalized with respect to specified laws relating to narcotic drugs and marijuana, “so that a search warrant may be issued in any such case at any time of the day or night if the judge or the United States Commissioner is satisfied that there is probable cause to believe that the grounds for the application exist.” Conference Rep.No.2546, 84th Cong., 2d Sess., 16 (1956), U.S.Code Cong. & Admin.News, p. 3320. The “positiveness” requirement of Rule 41(c) was referred to as inflexible and archaic, giving the peddler a distinct advantage over law enforcement forces and hampering efforts to deal with narcotics racketeering. S.Rep.No.1997, 84th Cong., 2d Sess., 8-9 (1956). The Report continues: “the element of ‘positiveness’ [of Rule 41] is no longer required and ‘probable cause’ alone is enough to obtain a night search warrant in narcotics cases . . . .” Id. at 9.
The “positiveness” previously required of the affidavits by Rule 41(c) was that “the property is on the person or in the place to be searched,” as to which, under section 1405(1), the issuing judge or commissioner need have only “probable cause” to believe.
21 U.S.C. § 879(a), has now supersede ed section 1405(1). It provides as follows:
A search warrant relating to offenses involving controlled substances may be served at any time of the day or night if the judge or United States magistrate issuing the warrant is satisfied that there is probable cause to believe that grounds exist for the warrant and for its service at such time.
This enactment I construe to be a restatement or interpretation of section 1405(1). It clarifies the meaning of that section, which had relieved search warrants for narcotics of the positivity *437requirement of Eule 41(c), substituting a probable cause requirement for a search at any time, thus giving the “flexibility” sought by Congress in narcotics cases. It does not seem to me that this interpretation is precluded by the fact that the controlled substances covered by section 879(a) are enlarged beyond those previously within the scope of section 1405.
From the foregoing history I conclude that the requirement of section 879(a) that the issuing magistrate be “satisfied that there is probable cause to believe that grounds exist . . . for its service at such time” means, when considered with Eule 41(c) as it then read, that there is probable cause to believe that, in the case of narcotics, the “property is on the person or in the place to be searched,” in which event the warrant could direct that it be served at any time. Thus, in the case of narcotics, previously under section 1405(1) and later under section 879(a), if the judge was satisfied “that there is probable cause to believe” rather than “if the affidavits are positive” that the “property is on the person or in the place to be searched,” the warrant could permit execution at any time. It is in this manner I interpret the House Eeport, relied upon by the Government, which states:
Subsection (a) of this section [21 U. S.C. § 879] incorporates 18 U.S.C. 1405 and authorizes service of a search warrant at any time of the day or night if probable cause has been established to the satisfaction of the judge or U.S. magistrate issuing the warrant.3
Our question then, under section 879(a), is the factual one whether in each case the magistrate issuing the warrant, which authorized the search at any time of the day or night, was “satisfied that there is probable cause to believe that grounds exist for the warrant and for its service at such time,” i. e., “that the property is on the person or in the place to be searched.” In the Gooding case the magistrate, referring to the facts set forth in the affidavit accompanying and made a part of the warrant, states: “I am satisfied that there is probable cause to believe that the property so described is being concealed on the (premises) above described .” The affidavit supports such a statement by the magistrate. The same is true of the situation in Barnett.
These search warrants accordingly have met the requirements of section 879(a).4 The question then arises whether the searches were nevertheless invalid for failure to meet the standards for a nighttime search contained in either Title 23 or Title 33 of the District of Columbia Code.
I consider first Title 23 in its relation to Title 33. The search warrant provisions of 23 D.C.Code §§ 521-525 (Supp. V, 1972) do not refer specifically to controlled substances. They apply generally to search warrants in this jurisdiction. The warrants in the cases before us fail to meet these standards for a nighttime search, namely,
That there is probable cause to believe that (A) it cannot be executed during the hours of daylight, (B) the property sought is likely to be removed or destroyed if not seized forthwith, or (C) the property sought is not likely to be found except at certain times or in certain circumstances . . . .
*43823 D.C.Code § 522(c)(1) (Supp. V, 1972).
A strong argument is available that these provisions were intended by Congress to apply in this jurisdiction to controlled substances as well as generally, notwithstanding 33 D.C.Code § 414, as amended (Supp. V, 1972), applies specifically to search warrants for narcotics, and subsection (h) of section 414 provides that the warrant shall direct that it be served at any time in the day or night. In United States v. Thomas, 294 A.2d 164, cert. denied, 409 U.S. 992, 93 S.Ct. 341, 34 L.Ed.2d 258 (1972) the Court of Appeals of the District of Columbia spoke upon this matter as follows:
We think it more in harmony with the obvious intent of Congress to give special treatment to narcotics law enforcement to view such provisions [relating to controlled substances] as the “special” ones (including D.C.Code 1967, § 33-414(h)) not subject to qualification by the general search warrant provisions of the U.S. and D. C.Codes (Rule 41(c), Federal Rules of Criminal Procedure, and § 23-522(c)(1)). The “special” area of legislation is narcotics law enforcement, not District of Columbia law enforcement ....
294 A.2d at 166-167.
We need not inquire whether or not we are bound by this ruling; for, that aside, I am unable to give precedence to sections 521 to 525 of Title 23 over section 414 of Title 33, insofar as the search warrants now considered are concerned. True it is that Title 33 appears to have been overlooked in the legislative history of Title 23, see the Appendix to this opinion, but I think the court cannot overlook the fact that Title 33 was nevertheless reenacted at the same session that enacted the up-to-date general search warrant provisions of Title 23. I accordingly conclude that as between the two standards for a nighttime search for narcotics Title 33, section 414(h), prevails over Title 23, section 522(c)(1).
Finally, does Title 33, section 414(h), control over section 879(a)? If so, the warrants were inadequate, for section 414(c) of Title 33 was not complied with. But I am persuaded that in a search warrant for narcotics involved in an alleged violation of the federal narcotics laws, as here, section 879(a) controls, as held by the Court of Appeals of the District of Columbia in Thomas. I reach this conclusion, however, upon somewhat different reasoning. It is that Chapter 4 of Title 33 of our Code, of which section 414(h) is a part, entitled “Narcotic Drugs,” is concerned only with violation of our local narcotics laws, that is, as section 414(a) states, “violation of the provisions of this chapter” — the District of Columbia Code chapter concerned with narcotics and defining related local crimes.
By reason of the foregoing, since the present warrants, explicitly issued in connection with the alleged violation of the federal narcotic laws, complied with section 879(a), I conclude they were valid and that the evidence seized thereunder should not have been suppressed. I reach this conclusion reluctantly. Congress recently, in providing in Title 23 of our local Code the standards generally applicable for a nighttime search in this jurisdiction, clearly differentiated between a nighttime and a daytime search. The legislative history of those provisions give strong evidence of an intention to include searches for controlled substances. Searches at night, especially of a home, present a potentially greater intrusion upon privacy. See Jones v. United States, 357 U.S. 493, 498, 78 S.Ct. 1253, 2 L.Ed.2d 1514 (1958). And no significant burden would be imposed on the magistrate or other officials by requiring special reasons for a search at night even for narcotics, particularly of a private home. These considerations have now found expression in Rule 41 itself as amended effective October 1, *4391972, subsequently to the issuance of the Gooding and Barnett search warrants. The Rule now provides in its subparagraph (c) as follows:
The warrant shall be served in the daytime, unless the issuing authority, by appropriate provision in the warrant, and for reasonable cause shown, authorizes its execution at times other than daytime ....
This provision would not have helped appellees had it been in effect when the present warrants were issued, for it is coupled with another provision, in sub-paragraph (h) of the new Rule, which defines the term “daytime” to mean “the hours from 6 a. m. to 10 p. m. according to local time.” The Gooding and Barnett warrants were each served before 10 p. m. local time.
The salutary effect of the modification of subparagraph (c) of the Rule remains for consideration with respect to search warrants issued after its effective date. The result I reach in the present cases I think follows from the statutory situation existing when the Gooding and Barnett warrants were issued, a situation which in my opinion did not go beyond what is permissible under the Fourth Amendment.
I accordingly concur in reversal.
APPENDIX
There is strong indication in the legislative history of 23 D.C.Code §§ 521-525 that Congress intended to apply these provisions to narcotics searches in this jurisdiction.
In revising the provisions governing Criminal Procedure for the District of Columbia Congress was advised that other than the “inadequate” positivity rule of 41(c), F.R.Crim.P., the then existing D.C.Code had no provision dealing with nighttime searches. Mr. Donald E. Santarelli, Associate Deputy Attorney General of the United States stated:
Mr. Chairman, we have also proposed a change in the standard [41(c), F.R. Crim.P.] for nighttime search warrant. As you know; the District of Columbia Code presently contains no provision at all governing the time for execution of a search warrant ....
* * * * * *
We have found that the positivity rule, positivity test, is inadequate. In fact, it is relatively unfair because of the greater potential intrusion on the privacy of persons from a nighttime search. There should be some justification for that search; not merely that you are positive that the evidence is there.
* * * * * *
This is for the protection of civil liberties and greater improvement over the positivity.
Hearings on S.2869, S.2602, and S.2980, Before the Senate Comm, on the District of Columbia, 91st Cong., 1st Sess., Pt. 4 at 1389 (1969) (Hearings). See also, Statement of Mr. Thomas A. Flannery, U. S. Attorney for the District of Columbia, id. at 1416.
The new provisions governing nighttime search warrants, 23 D.C.Code §§ 521-525, thus seem to have been enacted under the mistaken assumption that, notwithstanding Title 33 of the Code,
The District of Columbia Code presently contains no provision at all governing the time for execution of a search warrant.
H.R.Rep. No. 91-907, 91st Cong., 2d Sess. at 109 (1970) (H.R.Rep.). Moreover, the new provisions were intended to be comprehensive, S.Rep. No. 91-405, 91st Cong., 1st Sess. at 38-39 (1969), encompassing nighttime and no-knock searches for narcotics. See H.R.Rep., supra, at 109, including a statement of Mr. Charles T. Duncan, Corporation Counsel for the District of Columbia, that narcotics were a type of contraband, 23 D.C.Code § 521(d)(2), which “may be removed or destroyed if not seized forthwith or found only at nighttime.” Hearings, supra, Statement of Mr. Santarelli, at 1404. See also the testimony of Mr. Santarelli, id., at 1389-1390; the statement of Mr. *440Flannery, id., at 1417; and the statement of Mrs. Patricia Wald of the Neighborhood Legal Services, id., at 1493.
It would seem from the above that Congress may have intended the new search warrant nighttime provisions to apply in the case of narcotics. This interpretation is further supported by the reason stated by the District Court in Gooding:
Roughly sixty percent of the search warrants isued [sic] in the District of Columbia are related to violations of the narcotics laws. If Congress had intended to except federal narcotics search warrants from the requirements of 23 D.C.Code § 523(b), one would certainly expect the intention to be expressed in the statute or at least in the legislative history, possibly by reference to the special narcotic search statute then applicable in the District for local offenses. The Government has not directed the Court’s attention to any such indication and the Court has found none. (Footnote omitted.)
328 F.Supp. at 1007-1008.
Yet we are faced with the reenactment of Title 33, with its section 414(h), authorizing search warrants for narcotics, executed at night, without compliance with such standards as Title 23 requires generally for searches at night.
SPOTTSWOOD W. ROBINSON, III, Circuit Judge,concurring in the result:
The thoughtful and excellently crafted opinions of my colleagues demonstrate convincingly that the orders appealed from cannot-stand. I concur in reversal and in much of their supporting reasoning. I differ, however, with their conclusion that 21 U.S.C. § 879(a) authorizes nighttime execution of search warrants in federal narcotic eases merely on a showing of probable cause to believe that a controlled substance is then present on the person or premises to be searched. I believe, too, that the affidavits underpinning the warrants issued in the cases at bar should be credited with a larger and more crucial role in the resolution of these cases than they have yet been assigned. To accommodate these two considerations, I record this separate position.
I
At the outset, I acknowledge agreement with my colleagues that Section 879(a) set the standard for' nighttime execution of the warrants before us. The careful analysis and thorough treatment which they have given this aspect of the litigation certainly needs no effort toward further elaboration. The task left for me is simply to summarize the major propositions which have persuaded me.
While the Controlled Substances Act,1 of which Section 879(a) is a part, is not expressly made operative in the District of Columbia, it is clear that Congress intended the new law to have nationwide effect, and thus to encompass federal narcotic offenses which occur in the District.2 I see no conflict between Section 879(a) and D.C.Code § 33-414, which also is limited to execution of search warrants in narcotics cases, since the local provisions extend only to searches based on suspected transgressions of the District’s own drug laws.3 *441Moreover, statutes which are specific as to subject matter normally prevail over those which are less particularized in their area of concern.4 Nothing sufficient to override that principle appearing here, it follows that the federal narcotic search warrant procedures of Section 879(a) must take precedence over the general search warrant provisions of D.C.Code §§ 23-521 to 23-523 and, as well, the general service criteria set forth in Federal Criminal Rule 41(c).5
Our unanimous conclusion with respect to the applicability of Section 879(a) to the present cases is further buttressed by the canon that the more recent statute dominates the less recent6 for, as Judge Wilkey notes,7 Section 879(a) was considered and passed after enactment of Section 23-521 and its companion provisions. Additional support for our construction is derived from the requirement of the Controlled Substances Act that where one of its specifications so conflicts with a state law that the two cannot be read consistently, the federal regulation controls the field.8 I believe that such a conflict exists between Section 879(a) and the District provisions,9 and hence that effect must be given to the former as Congress has mandated.
II
In agreement with my colleagues up to this point, I now arrive at the place where our paths diverge. They hold that Section 879(a) works no change in its predecessor statute, 18 U.S.C. § 1405(1), which permitted search warrants in federal narcotic investigations to be served at any time of the day or night so long as the authorizing magistrate or judge was satisfied as to the existence of probable cause for the search. On the basis of the language of Section 879(a), which I consider to be very plain, I am unable to accept that interpretation.
*442I perceive no ambiguity in the wording of Section 879 (a) which would require a probe into its legislative history. As a comparison of that section with-former Section 1405(1) readily reveals, the two provisions are not nearly identical.10 Congress did not reenact the earlier in the later without significant alteration; it changed the language of Section 1405(1) importantly by addition of the final clause — “and for its service at such time.” Reading that clause with the preceding part of the section and applying normal rules of English grammar, I can construe the whole to mean but one thing: for service of a search warrant at night, probable cause must be shown for the search itself and probable cause must be shown for service of the warrant “at such time.” Indeed, as Judge Kelly stated in dissent in United States v. Thomas,11 to hold otherwise would be to render the added words meaningless.
In the face of an unambiguous statute, resort to legislative history serves no useful purpose.12 Here, although both of my colleagues resort to legislative comment on Section 879(a) to support their interpretation of that section, it seems to me that the comment introduces uncertainty not present in the section when examined alone. The House Report states that Section 879(a) “incorporates” former Section 1405 and authorizes anytime-service on “probable cause.”13 But the report intimates nothing as to whether the probable cause which it says must be established to the satisfaction of the magistrate or judge for service at “any time” is simply probable cause to search or, rather, probable cause to search at a particular time. This amphibology in the legislative history offers no clarification of what is already obvious to me from Section 879(a) itself.
I am convinced that Section 879 (a) exacts more for a nighttime search than merely probable cause for a search. I cannot, however, accept appellees’ argument that Section 879(a) embraces the criteria for nighttime searches which are contained in the general search warrant provisions of D.C.Code §§ 23-521 to 23-523.14 To require compliance with those standards in order to activate Section 879(a) would be to strain its wording beyond any perceptible intent of Congress in enacting special measures to control the drug traffic. Whatever may have been its purpose in selecting the language of Section 879(a), it could hardly have sought to limit nighttime searches for controlled drugs as strictly *443as nighttime searches in non-drug cases.15
Nor am I persuaded to my colleagues’ view of that Section 879(a) countenances a direction for a nighttime search just on probable cause to believe that the sought-after drugs are then present on the person or the property to be subjected to the search. Unless there is a showing of probable cause to believe that the matter to be seized will be found by search of a designated person or place, a search warrant cannot issue at all.16 Consequently, my colleagues’ construction of Section 879(a)" would demand no more for a nighttime search than one in the daytime; in other words, no more than is prerequisite for any search. If, as I think, the last clause of Section 879(a) establishes a probable cause requirement for nighttime execution additional to probable cause to search,17 their construction reads that clause completely out of the section and would leave the door wide open to nighttime execution of any warrant licensing a search for controlled substances.
In my view, the probable cause which Section 879(a) exacts for searches at night can be supplied only by circumstances demonstrating reasonable cause for a search at that particular time.18 Section 879(a) calls for something above and beyond the showing that would support a daytime search, and that would require a degree of justification outweighing the potentially more serious intrusion on privacy inherent in any nighttime search. Not all searches for controlled substances possess the same degree of urgency, nor do all applications for nighttime search warrants induce the same conviction of need. Some probable cause is more probable than some other, and some ultimately turns out to be a false alarm. A standard of reasonable cause which enables a realistic evaluation of the competing public and private interests accommodates the myriad situations confronting magistrates and judges far better than any inexorable rule possibly could. And such a standard serves well the legislative objectives underlying Section 879(a) while maintaining an appropriate sensitivity to the concern for privacy shared by the citizenry at large.
The test of reasonable cause for nighttime execution does not demand a demonstration that drugs are positively on the premises at night, or that they could be found on the premises only at night, or that for some reason a search would be impossible in the daytime. It does summon some factual basis for a prudent conclusion that the greater intrusiveness of nighttime execution of the warrant is justified by the exigencies of the situation. The remaining question, then, is whether there was justification of that caliber in these cases.
*444III
Consideration of this question marks the point at which I am able to rejoin my colleagues — in the disposition of these appeals. For while I do not subscribe to the probable cause standard they espouse for nighttime searches under Section 879(a), I am satisfied that the warrants and supporting affidavits in these cases afforded ample foundation for allowance of such searches under the test I have endeavored to articulate.
The affidavits in- the two eases are quite similar, and they portray very similar situations. The affiant, a police officer, was told by an informant of proven reliability that a named individual —in each case, the appellant — was selling narcotic drugs on specified premises. The informant advised of a recent purchase which he had made, and stated that he could transact another for the edification of the officer. The information supplied by the informant was then verified by a transaction, at the place and with the person previously specified, under controlled conditions leaving no doubt as to a sale of narcotics.
In the recitals bearing vitally on the question at hand, the search warrants in both cases were identical. Each stated that the magistrate was “satisfied that there is probable cause to believe that” narcotics and narcotic paraphernalia “is being concealed on the” described premises. Each warrant proceeded to direct that it be served and that the search be made “at anytime in the day or night.” The service and search occurred in the nighttime within one day in one instance, and within three days in the other instance, after the verified on-premises drug purchase was made.
Beyond cavil, the affidavit disclosed and the magistrate found reasonable cause for a nighttime search in each of these eases. The showing went beyond grounds for believing that narcotics were kept on the premises searched; it extended to ground for believing that a drug-peddling operation persisted there. Where, as here, it appears that a search is calculated not only to garner evidence of past crime but also to terminate a serious species of ongoing criminality, reasonable cause for a nocturnal intrusion is demonstrated. For this reason, I concur in the conclusion that there was an ample legal and factual basis for the searches, and in reversal of the orders suppressing their fruits.
. Act of July 18, 1956, ch. 629, Title II, § 201, 70 Stat. 573, repealed by P.L. 91-513, Title III, § 1101(b)(1)(A), 84 Stat. 1292 (1970).
. Such provisions included former sections 174 and 184(a) of Title 21 of the United States Code, and related violations of the Internal Revenue Code.
. H.R.Rep.No.91-1444, 91st Cong., 2d Sess., Pt. 1 at 54 (1970) (hereinafter, H.R.Rep.No.91-1444b U.S.Code Cong. & Admin.News, p. 4621, and like language in the Senate Report, S.Rep.No.91-613, 91st Cong., 1st Sess., 30-31 (1969).
. Some question may be raised about the applicability of section 879(a) in the District of Columbia in that Congress had failed specifically to include in the Act a special provision of applicability to the District of Columbia as it had done with respect to section 1405(2). I do not think the applicability of section 879(a) to this jurisdiction turns upon such a special provision, but upon the considerations advanced subsequently in this opinion.
. Pub.L. No. 91-513, tit. II, 84 Stat. 1236, 1242 (1970), 21 U.S.C. § 801 et seq. (1970).
. The national scope of the Act is apparent from 21 U.S.C. § 801 (1970), in which congressional findings as to the interstate and intrastate aspects of traffic in narcotics are enunciated.
. Section 33-414 (a) provides :
A search warrant may be issued by any judge of the Superior Court of the District of Columbia or by a United States commissioner for the District of Columbia when any narcotics drugs are manufactured, possessed, controlled, sold, prescribed, administered, dispensed, or compounded in violation of the pro*441visions of this chapter, and any such narcotic drugs and any other property designed for use in connection with such unlawful manufacturing, possession, controlling, selling, prescribing, administering, dispensing, or compounding, may be seized thereunder, and shall be subject to such disposition as the court may make thereof and such narcotic drugs may be taken on the warrant from any house or other place in which they are concealed.
(emphasis supplied).
. D. Ginsberg & Sons v. Popkin, 285 U.S. 204, 208, 52 S.Ct. 322, 76 L.Ed. 704 (1932); Kepner v. United States, 195 U.S. 100, 125, 24 S.Ct. 797, 49 L.Ed. 114 (1904). Compare Fourco Glass Co. v. Transmirra Prods. Corp., 353 U.S. 222, 228-229, 77 S.Ct. 787, 1 L.Ed.2d 786 (1957).
. Fed.R.Crim.P. 41(c). At the time the warrants in controversy were issued and executed, Rule 41(c) authorized a direction for nighttime service only where the affidavit supporting the warrant was positive that the property to be seized was on the person or in the place to be searched. The positivity requirement has since been deleted, and Rule 41(c) now permits such a direction for reasonable cause shown. See note 16, infra.
. Schick v. United States, 195 U.S. 65, 68-69, 24 S.Ct. 826, 49 L.Ed. 99 (1904); United States v. Hosmer, 76 U.S. (9 Wall.) 432, 435, 19 L.Ed. 662 (1869).
. Ante p. 431.
. Section 903 of the Act provides:
No provision of this subchapter shall be construed as indicating any intent on the part of the Congress to occupy the field in which that provision operates, including criminal penalties, to the exclusion of any State law on the same subject matter which would otherwise be within the authority of the State, unless there is a positive conflict between that provision of this subchapter and that State law so that the two cannot consistently stand together.
21 U.S.C. § 703 (1970). The District of Columbia falls within the Act’s definition of “State”. 21 U.S.C. § 802(24) (1970).
. As I later point out, text infra at notes 14-15, the local provisions for nighttime execution of search warrants are considerably more stringent than that of § 879(a), and thereby conflict with the disposition of Congress to make federal narcotics searches at night less rather than more difficult than other types of searches.
. Section 879(a) reads:
A search warrant relating to offenses involving controlled substances may be served at any time of the day or night if the judge or United States magistrate issuing the warrant is satisfied that there is probable cause to believe that grounds exist for the warrant and for its service at such time.
. 294 A.2d 164 (D.C.App.), cert. denied, 409 U.S. 992, 93 S.Ct. 341, 34 L.Ed.2d 258 (1972). In Thomas, a majority of the court construed § 879(a) as my colleagues do here. Id. at 166.
. United States v. Public Util. Comm’n of California, 345 U.S. 295, 315, 73 S.Ct. 706, 97 L.Ed. 1020 (1953); Ex parte Collett, 337 U.S. 55, 61, 69 S.Ct. 944, 93 L.Ed. 1207 (1949); See also United States v. Rice, 327 U.S. 742, 752-753, 66 S.Ct. 835, 90 L.Ed. 982 (1946).
. “Subsection (a) of this section incorporates 18 U.S.C. 1405 and authorizes service of a search warrant at any time of the day or night if probable cause has been established to the satisfaction of the judge or U.S. magistrate issuing the warrant.” H.R.Rep. No. 91-1444 (pt. I), 91st Cong., 2d Sess. 54 (1970) U.S.Code & Cong.News, p. 4621. Identical language is used in the Senate Report, S.Rep. No. 91-613, 91st Cong., 1st Sess. 30-31 (1969).
. D.C.Code § 23-522(c)(1) (Supp. V 1972) permits search warrants to be executed at any time of the day or night only upon probable cause to believe that
(A) it cannot be executed during the hours of daylight, (B) the property sought is likely to be removed or destroyed if not seized forthwith, or (C) the property sought is not likely to be found except at certain times or in certain circumstances.
. As the House Report states, the purpose of Congress in enacting the Controlled Substances Act was to deal with narcotic usage by more effective methods of law enforcement. See H.R.Rep. No. 91-1444 (pt. I), 91st Cong., 2d Sess. 1 (1970).
. Sgro v. United States, 287 U.S. 206, 210-211, 53 S.Ct. 138, 77 L.Ed. 260 (1932); Schoeneman v. United States, 115 U.S.App.D.C. 110, 113, 317 F.2d 173, 176 (1963); Rosencranz v. United States, 356 F.2d 310, 315-318 (1st Cir. 1966); Durham v. United States, 403 F.2d 190, 193-194 (9th Cir. 1968). See also Jones v. United States, 362 U.S. 257, 270-271, 80 S.Ct. 725, 4 L.Ed.2d 697 (1960); United States v. Ramirez, 279 F.2d 712, 715 (2d Cir.), cert. denied, 364 U.S. 850, 81 S.Ct. 95, 5 L.Ed.2d 74 (1960).
. See text supra at notes 10-11.
. The standard of “reasonable cause shown” has replaced the “positivity” requirement for nighttime searches under former Fed.R.Crim.P. 41(c). The Rule as amended reads in pertinent part:
The warrant shall be served in the daytime, unless the issuing authority, by appropriate provision in the warrant, and for reasonable cause shown, authorizes its execution at times other than daytime. It shall designate a federal magistrate to whom it shall be returned.