OPINION
Defendant Michael Wayne Pilling appeals his conviction for assault by a prisoner, a third degree felony, in violation of Utah Code Ann. § 76-5-102.5 (1990). We affirm.
FACTS At approximately 4:30 a.m. on October 11, 1992, Officer Watkins received a call about a disturbance at an apartment complex in Helper, Utah. After arriving at the complex, Officer Watkins determined that the disturbance was coming from defendant's apartment. Officer Watkins knocked on the door and defendant invited him into his apartment. While inside, Officer Watkins observed defendant yell at himself in an unintelligible language, then turn and yell at himself in English, telling himself to "shut up." Officer Watkins tried unsuccessfully to communicate with defendant while waiting for back-up to arrive.
According to Officer Watkins, defendant yelled that he wanted to talk with Don Kelly, a member of the Carbon-Emery Drug Task Force, because "Michael is on drugs." When Officer Watkins asked defendant who Michael was, he did not respond. Officer Watkins then asked where Michael's drugs were and defendant indicated in the kitchen. From where he was standing in the living room, Officer Watkins could see the kitchen and observed several syringes and a baggie containing white powder.
Officer Watkins testified he then advised defendant that he was under arrest, to which defendant replied, "No, I'm not under arrest." Officer Watkins advised defendant a second time that he was under arrest, to which defendant responded, "No, I'm not under arrest. I want to talk to Don Kelly." Defendant then jumped from the couch and ran into the bedroom. In the meantime, *Page 606 Officer Wood arrived at the apartment, answering Officer Watkins's request for backup. Officer Watkins and Officer Wood followed defendant into the bedroom where defendant took several swings at the officers. Defendant then began to mumble and walked toward the bedroom door. As he started to walk past the officers, Officer Watkins grabbed defendant by the shoulder and again advised him that he was under arrest. They then walked into the living room where defendant put his hands behind his back and said, "Okay. Okay. I'm under arrest."
Officer Watkins held defendant's left arm while Officer Wood attempted to handcuff defendant; however, the handcuffs malfunctioned. When Officer Wood removed his hand from defendant to fix the handcuffs, defendant bent down and pulled an object from his crotch area and hit Officer Watkins on the side of the head, breaking his tooth and severely bruising his cheek. Thereafter, defendant ran out the door, down the hallway and outside. He was apprehended several minutes later.
Defendant was subsequently charged with aggravated assault by a prisoner, escape,1 unlawful possession of a controlled substance, and possession of drug paraphernalia. On count I, the jury found defendant guilty of the lesser included offense of assault by a prisoner, a violation of Utah Code Ann. §76-5-102.5 (1990). He was also convicted on counts III and IV. Defendant was thereafter sentenced to zero to five years in the Utah State Prison on counts I and III, and to six months in the Carbon County Jail on Count IV, to run concurrently.
On appeal, defendant challenges only his conviction for assault by a prisoner, arguing that: (1) he was not a prisoner when he struck Officer Watkins and thus could not have been convicted of assault by a prisoner; and (2) the evidence was insufficient to support his conviction for assault by a prisoner. Defendant asks that we vacate his conviction and enter a judgment for the lesser included offense of assault against a peace officer. The State responds that we should affirm defendant's conviction because: (1) defendant has not preserved the issue for appeal, and (2) defendant fails to meet his burden to marshal the evidence.
I. PRISONER STATUS Defendant argues his conviction for assault by a prisoner, a third degree felony,2 was in error and that he should instead have been convicted of assault against a peace officer, a class A misdemeanor.3 Specifically, he claims that he was not a prisoner at the time of the assault and thus could not be guilty of assault by a prisoner because he was "not in custody of a peace officer pursuant to a lawful arrest."4
The State counters defendant's challenge on procedural grounds, asserting that defendant's failure to preserve this issue before the trial court precludes our consideration of the issue on appeal. We agree.
It is well established that "appellate courts will not consider an issue, including a constitutional argument, raised for the first time on appeal unless the trial court committed plain error or the case involves exceptional circumstances."State v. Brown, 856 P.2d 358, 359 (Utah App. 1993); accordState v. Brown, 853 P.2d 851, 853-54 (Utah 1992). Therefore, to ensure the trial court's opportunity to consider an issue, appellate review of criminal cases in Utah requires that " 'some form of specific preservation of claims of error must be made a part of the trial court record before an appellate court will review such claim on appeal.' " State v. *Page 607 Rangel, 866 P.2d 607, 611 (Utah App. 1993) (quoting State v.Johnson, 774 P.2d 1141, 1144 (Utah 1989)); accord State v.Tillman, 750 P.2d 546, 551 (Utah 1987).
At trial, defendant did not argue he was not a prisoner because he was not in custody at the time of the assault. Indeed, defendant concedes in his brief that he did not raise this issue below.5 Additionally, at no time did defendant argue before the trial court that he should be found guilty of the lesser included offense of assault against a peace officer. Defendant did not request an instruction on the offense of assault against a peace officer and did not object to the jury instructions that were given.6 See Jenkins v. Weis,868 P.2d 1374, 1379 (Utah App. 1994) (failing to object below to jury instruction bars consideration of issue on appeal).
Furthermore, the facts of this case do not warrant an exception for plain error. "A finding by the court of plain error requires that the error be obvious and harmful."State v. Gotschall, 782 P.2d 459, 463 (Utah 1989); accord Statev. Eldredge, 773 P.2d 29, 35 (Utah 1989). It is difficult to see how any such error could have been obvious. Based on the facts before it, the trial court could properly have determined that defendant was in custody pursuant to a lawful arrest at the time of the assault. Accordingly, because the issue was not properly preserved and we do not find plain error, we decline to consider this issue for the first time on appeal.7 II. SUFFICIENCY OF THE EVIDENCE Defendant next argues that the evidence was insufficient to support his conviction. He claims the State did not prove beyond a reasonable doubt that he was guilty of assault by a prisoner because the evidence did not establish that he was in custody pursuant to an arrest at the time of the assault.
In challenging the sufficiency of the evidence, defendant carries a heavy burden. Defendant "must 'marshal all evidencesupporting the jury's verdict and must then show how this marshaled evidence is insufficient *Page 608 to support the verdict even when viewed in the light most favorable to the verdict.' " State v. Scheel, 823 P.2d 470, 472 (Utah App. 1991) (quoting State v. Perdue, 813 P.2d 1201, 1207 (Utah App. 1991)); accord Cambelt Int'l Corp. v. Dalton,745 P.2d 1239, 1242 (Utah 1987).
Defendant fails to meet this burden. Although he acknowledges the marshaling requirement in his brief, he wholly fails to marshal the evidence supporting the jury's verdict and likewise fails to show how it is insufficient to support the verdict. Instead, defendant claims only that "[a]ccording to Watkins, Pilling was not in their custody at the time he struck Watkins because the officers were still attempting to place him in their custody." However, this statement mischaracterizes Officer Watkins's testimony and is contrary to the record. Officer Watkins did not testify that he had not effectuated the arrest or that he had not taken defendant into custody at the time of the assault.
Furthermore, defendant fails to address key evidence that supports the conclusion that he was in custody at the time of the assault and has " 'left it to the court to sort out what evidence actually supported the findings.' " Scheel, 823 P.2d at 473 (quoting Heinecke v. Department of Commerce,810 P.2d 459, 464 (Utah App. 1991)). Therefore, it is inappropriate for us to entertain the merits of defendant's argument on this issue because he "has not marshaled the evidence supporting his conviction, much less demonstrated why this evidence is so inconclusive that a reasonable jury could not have convicted him." Id.8 CONCLUSION Defendant has not preserved for appeal the issue of whether he was a prisoner at the time of the assault, and we find no plain error. Furthermore, in challenging the sufficiency of the evidence, defendant fails to meet his burden to marshal the evidence. Accordingly, we affirm defendant's conviction for assault by a prisoner.
DAVIS and GREENWOOD, JJ., concur.