SLIPPERY ROCK — Investigators have ruled that a 28-year-old Harrisville man died accidentally Wednesday following a night of heavy drinking mixed with drugs.

But Aaron L. Cook did not die of hypothermia, state police said.

Cook’s body was found laying in snow in a wooded area near Copper and Elm streets about 8:20 p.m. Wednesday, more than 18 hours after he was last seen leaving a Slippery Rock bar.

Police said he had been drinking with friends since Tuesday night.

An autopsy Thursday night determined that Cook did not die from an assault, according to police Cpl. Daniel Herr.

“This absolutely was an accidental death,” Herr said.

Possibly from having consumed a large amount of alcohol, coupled with using drugs during that time, Cook may have become disorientated after walking away from the bar, Herr said.

Police would not identify what kind of drugs they think Cook was using that night.