Wess Roley, 20, was found dead with a gun nearly six hours after the attack, and investigators say he acted alone, according to the Associated Press.

Wess Roley has been identified as the suspect behind the deadly shooting, according to a law enforcement official who spoke to the Associated Press on condition of anonymity.

Kootenai County Sheriff Robert Norris said on Sunday that it remains unclear whether Roley was shot dead by cops or died by suicide.