OMAHA, Neb. (AP) — One day after an 18-year-old man was found dead in a vehicle Omaha police say they are investigating the case as a homicide.

Police said Sunday the death of Erik Valencia was classified as a homicide after an autopsy was completed.

Valencia’s body was found Saturday afternoon inside a vehicle that was parked behind apartments near 78th and Miami streets.

No arrests were reported Sunday.

In July, Valencia was present when 19-year-old Joey Merolla died during a game of Russian roulette. Prosecutors say Valencia took the gun used in the game and left the apartment.

Valencia later pleaded guilty to a misdemeanor charge of obstruction of government operations. He was fined $500.