A jury on April 2 found Mario Casciaro guilty of first-degree murder for the presumed 2002 death of 17-year-old Brian Carrick.
Prosecutors argued that Casciaro, 29, used another man, Shane Lamb, as the "blunt force instrument" to kill Carrick over a drug debt while inside the produce cooler of Val's Foods, where all three worked. Carrick was last seen alive in the early evening of Dec. 20, 2002. A judge last month sentenced Casciaro to 26 years in prison.
It was Casciaro's second trial – the first ended in a mistrial after jurors failed to reach a unanimous verdict.
Prosecutors said the case will not be closed until Carrick's remains are found.