A Nevada prisoner died after he was pepper-sprayed by guards, shut in a storage room, shackled and restrained with his face to the ground, according to an autopsy report obtained by The Associated Press.

Patrick Odale’s death on Dec. 28, 2023, at the Southern Desert Correctional Center has been ruled a homicide.

The autopsy report finalized in late August follows a nearly nine-month coroner investigation into Odale’s death at the mostly medium security prison near Las Vegas. The Clark County coroner’s office found Odale, who was 39, died of “ positional and mechanical asphyxia in the setting of law enforcement restraint.”