On September 8, 2015, Sash was found dead in his Oskaloosa, Iowa, home around 8 a.m. local time. He was 27. The autopsy report concluded that his death was caused by a mixture of drugs. On January 26, 2016, five months after his death, Sash's family released the results of testing performed on his brain, confirming that he was suffering from stage 2 chronic traumatic encephalopathy (CTE), a degenerative brain disease caused by head injuries, at the time of his death.