Jarrod Wyatt, from California, accepted a plea deal, four days before his case was set to go to trial.
According to ABC News, Wyatt will serve a 50-years-to-life prison for killing 21-year-old Taylor Powell.
Police officers discovered Wyatt naked and covered in blood head-to-toe when they arrived at a house California in March 2010.
Wyatt, a mixed-martial artist, reportedly told the officers, ‘I killed him.’
According to the report, he had cut out Powell''s heart and tongue, the court documents said.
The two had ingested hallucinogenic mushrooms before Wyatt attacked and killed Powell, according to witnesses.