CANCUN, Mexico (AP) — A Mexican state court has denied an appeal and upheld a 12-year prison sentence for a former "Survivor" producer convicted of killing his wife on a 2010 Cancun beach vacation.

State prosecutors in Quintana Roo said Monday that the state supreme court had upheld the sentence handed down against Bruce Beresford-Redman in March 2015.

Beresford-Redman was convicted of killing his Brazilian-born wife Monica Burgos Beresford-Redman on a family vacation. Her body was found in a sewer cistern at the resort where they were staying.

Bruce Beresford-Redman's attorney in Mexico confirmed the appeal's denial Monday in a statement. Lawyer Jaime Cancino Leon said there was no evidence to support the verdict and the trial was plagued by irregularities. He said they would file another round of appeals to Mexico's supreme court.