Alex Palmieri was 15 when witnesses say he was repeatedly beaten with a baseball bat in a Bridgeport garage in 1984.

"But boss! But boss!" he pleaded as he fell to the floor, they said.

The teenager, who had shown promise as an opera singer, was then stuffed into a refrigerator that was dumped in Bridgeport Harbor, the witnesses said. Two years later, a sneaker and foot bones washed ashore. His girlfriend identified the sneaker as Palmieri's.

Now, 25 years later, the man convicted of the killing is trying to win a new trial with DNA testing. But there's an unusual twist: Thomas Marra Jr. wants DNA tests done on the bones to determine whether authorities actually found the victim.

The Connecticut Supreme Court hears arguments Wednesday on Marra's appeal.

A Superior Court judge last year decided against requiring Palmieri's brothers to give DNA samples to be compared with the remains.

Kenneth Fox, Marra's attorney, said for now he is only seeking access to the bones to have them tested to see if DNA can be extracted. He argues in court papers that comparing the DNA samples with samples from the victim's family will show the bones did not belong to the victim.

DNA testing was not available at the time the bones were found.

DNA cases typically involve showing whether a defendant matches physical evidence from a crime scene. Fox says the case is unusual because it involves using DNA to challenge the identity of the victim.

"We want to show they're not Alex Palmieri's bones," Fox said. "The bones were the state's only real evidence that Palmieri was dead, assuming you believe they were his bones."

The Connecticut Criminal Defense Lawyers Association is supporting the appeal, saying in court papers the decision may affect the availability of DNA testing "for other present and future criminal defendants."

Prosecutors didn't immediately return telephone messages left by The Associated Press on Tuesday.

In rejecting the DNA request last year, the Superior Court judge said there was overwhelming evidence that Marra fatally beat Palmieri and that it was unlikely DNA evidence would have affected the outcome of the trial.

Fox acknowledges that a favorable DNA test would not prove Marra's innocence, but said it would weaken the account of witnesses that he was beaten and that his body thrown in the harbor.