The Pampa Police Department responded to 306 N. Faulkner Street at about 4:20 a.m. Saturday morning.
Nick Nelson, 28, was found in the living room with a single gunshot wound. He was pronounced dead on scene, according to Brian Massey, public information officer for the Pampa Police Department.
The suspect, Eddie Graham, 28, was already on his knees with his hands above his head when police arrived, said Massey.
Graham was arrested and book into the Gray County Jail on one charge of murder.
The investigation is ongoing.