OPINION
LARSEN, Justice.On April 2, 1976, appellant was convicted of voluntary manslaughter and possession of an instrument of crime, following a jury trial. Post-verdict motions were denied; appellant was sentenced to three to six years imprisonment for the voluntary manslaughter conviction and a concurrent one to two years imprisonment for the conviction for possession of an instrument of crime. These appeals followed.1
Appellant challenges the trial court’s denial of his motion to suppress a signed statement which was given by him to the police approximately twelve hours after his arrest. He *593alleges that the incriminating statement was obtained in violation of Pa.R.Crim.P. Rule 1302 and this Court’s decision in Commonwealth v. Futch, 447 Pa. 389, 290 A.2d 417 (1972) which held that evidence obtained during, and reasonably related to, an “unnecessary delay” between arrest and arraignment must be excluded.
Before evidence will be suppressed on the grounds of pre-arraignment delay, three conditions must be met: (1) the delay must be unnecessary; (2) the evidence must be reasonably related to the delay; and (3) the evidence must be prejudicial to the defendant. Commonwealth v. Williams, 455 Pa. 569, 319 A.2d 419 (1974).3 In considering the applicability of these conditions to an incriminating statement made in the interim between arrest and arraignment, this Court has narrowed the relevant time frame for determining whether the statement is the illegal fruit of an “unnecessary delay” to the period between the arrest and the making of the statement. Commonwealth v. Rowe, 459 Pa. 163, 327 A.2d 358 (1974). This is because, “as we noted in Futch, if unnecessary delay follows the securing of a [incriminating statement], that evidence is not reasonably related to the subsequent delay. See, e. g., United States v. Mitchell, 322 U.S. 65, 64 S.Ct. 896, 88 L.Ed. 1140 (1944) (further citation omitted). For as the Supreme Court stated in Mitchell, ‘the illegality of [an accused’s] detention does not retroactively change the circumstances under which he made the disclosures.’ 322 U.S. at 70, 64 S.Ct. at 898.” Id. at 168, 327 A.2d at 361.
Applying these principles on review, our responsibility is ‘to determine whether the record supports the factual findings of the court below and the legitimacy of the *594inferences and legal conclusions drawn from those findings.’ Commonwealth v. Goodwin, 460 Pa. 516, 521, 333 A.2d 892, 895 (1975).
If the suppression court has determined that the evidence is admissible, ‘this Court will consider only the evidence of the prosecution’s witnesses and so much of the evidence for the defense as, fairly read in the context of the record as a whole, remains uncontradicted.’ Commonwealth v. Kichline, 468 Pa. 265, 280, 361 A.2d 282, 290 (1976); see Culombe v. Connecticut, 367 U.S. 568, 604, 81 S.Ct. 1860, 1878, 6 L.Ed.2d 1037 (1961) (Opinion of Frankfurter, J.).
Commonwealth v. Brown, 473 Pa. 562, 566, 375 A.2d 1260, 1262 (1977).
The facts surrounding the statement in question, as found by the suppression court and supported by the record are as follows: On September 30, 1975, at 2:17 a. m., appellant telephoned the police informing them that his wife, Doris Williams, and a man she had been living with, Charles Lloyd, were dead. The police arrived at the address given to them by appellant and found appellant at the scene with the two bodies. Appellant was taken by the police to two hospitals for the treatment of a laceration on his right hand. Following his discharge from the second hospital, appellant was arrested at approximately 7:30 a. m. of the same day (September 30) and taken to homicide headquarters for questioning. The testimony of several doctors who treated appellant at the hospital, and of Detective Winston and Sergeant Gibbons who accompanied appellant to the hospitals, establishes that appellant was emotionally upset, nervous, highly agitated and distraught during this period of time. At 8:30 a. m., appellant was read his Miranda rights which he waived. However, because of his emotional condition appellant was not questioned at that time. His condition was continually observed by Detective Winston who testified that appellant appeared to be calming down at 10 a. m. (when he was given cigarettes) and calmed down even *595more so at 12:40 p. m. (when he was given lunch, taken to the restroom and given a “nerve” pill which he requested).
At 3 p. m., appellant had finally calmed down to a state which would permit the police to question him. Detective Richardson again read appellant his rights which were again waived. In addition to waiving his rights, appellant stated: “When I’m good and ready I’ll tell you. There’s a thing behind it and I’m not ready to tell you, but when I’m ready I’m going to tell you.” At this time, appellant was alert, normal and responsive. He talked for one and one-half hours about his personal background, never mentioning the incident before Detective Richardson ended the interrogation. Appellant was given dinner at 6 p. m. and another “nerve” pill at 6:30 p. m. At 7 p. m., Detective Richardson re-entered the room and asked appellant if he was ready to talk. Appellant proceeded to give the incriminating statement which was recorded by the police and then signed by appellant at approximately 9:45 p. m. Appellant was arraigned at 1:40 a. m.
The suppression court held that, under these circumstances, the first seven and one-half hours of delay were directly attributable to appellant’s emotional, unstable condition and thus constituted a necessary delay. We agree. The preliminary arraignment required by the Pennsylvania Rules of Criminal Procedure is a procedure designed to inform the accused of the nature of the charges against him and to protect the accused’s right to counsel, right to bail and his right to a preliminary hearing. See Commonwealth v. Tingle, 451 Pa. 241, 301 A.2d 701 (1973) and Pa.R.Crim.P. Rule 140 (formerly Rule 119). The preliminary arraignment would be reduced to a meaningless ritual if the accused were to be arraigned at a time when his condition would significantly impair his comprehension of the nature of the charges and his understanding of his rights. Therefore, we hold that a period of delay attributable to an accused’s impaired mental or physical condition, which condition renders him *596incapable of benefiting from the protections the preliminary arraignment was designed to afford, is necessary, and such period is to be excluded when determining whether a statement was obtained as a result of an “unnecessary delay.” We note that, in similar circumstances, the Superior Court has reached this same conclusion. Commonwealth v. Bradwell, 231 Pa.Super. 35, 326 A.2d 887 (1974) (period of delay caused by intoxication of accused excluded from calculation of period of unnecessary delay).
Having excluded the seven and one-half hour period (i. e., from arrest at 7:30 a. m. to 3 p. m., when appellant was stable enough to be questioned) from the determination of the admissibility of the statement, we must examine the remaining four-hour period between 3 p. m. and 7 p. m. (when appellant began to give the incriminating statement) to determine if that delay was necessary and, if not, to determine if the statement was reasonably related to the delay. Commonwealth v. Williams, supra. (It is conceded that the third prong of the Williams test, that the evidence obtained during the delay be prejudicial, has been met.)
For the sake of argument, we assume, without deciding, that the four-hour delay was unnecessary.4 However, we find that the statement was not reasonably related to the four-hour delay. Appellant informed police at 3 p. m. that he would talk about the incident, but first would prefer to give the police “background” information. He spoke until 4:30 p. m., never mentioning the incident, and was then left alone until 6 p. m. when he was given dinner. Detective Richardson returned at 7 p. m. and asked appellant if he *597were ready to talk about the incident. The appellant replied with the incriminating statement. Under these circumstances, the suppression court properly refused to suppress the statement since it was given as a result of appellant’s decision at 3 p. m. to talk when ready, and was not in any way related to the four-hour delay.5
Judgments of sentence affirmed.
NIX, J., concurred in the result. ROBERTS, J., filed a dissenting opinion in which MANDERINO, J., joins.. Appellant appealed the voluntary manslaughter judgment of sentence directly to this Court. The judgment of sentence for the possession offense was appealed to the Superior Court, which certified the appeal to this Court.
. Rule 130 states: “When a defendant has been arrested without a warrant in a court case, he shall be taken without unnecessary delay before the proper issuing authority where a complaint shall be filed against him and he shall be given an immediate preliminary arraignment.”
. The six-hour rule enunciated in Commonwealth v. Davenport, 471 Pa. 278, 370 A.2d 301 (1977), effective May 15, 1977, is not applicable to this case.
. In Commonwealth v. Cherry, 457 Pa. 201, 321 A.2d 611 (1974), we suggested that arraignment delays might be necessary where the suspect initially indicates a willingness to cooperate, in order to permit the police to obtain information from co-suspects or to locate evidence in the vicinity. This was dictum, however, as Cherry had been unwilling to cooperate. See also Commonwealth v. Johnson, 459 Pa. 171, 327 A.2d 618 (1974). Given our resolution, infra, of the second element of the Williams test, we need not decide whether the four-hour delay was necessary.
. Appellant also contends 1) that the statement was involuntary and not the result of a knowing and intelligent waiver of his rights; 2) that the evidence is insufficient as a matter of law to sustain a conviction for voluntary manslaughter; and 3) that trial counsel was ineffective for failing to request specific points for charge on certain defenses of justification. We have reviewed the record and find these issues to be without merit.