GARDEN GROVE, Calif. (AP) — Southern California investigators are investigating the shooting deaths of a 66-year-old man and his 85-year-old stepfather as a murder-suicide.

Police in Orange County said Sunday that the younger man fatally shot his stepfather and then turned the gun on himself.

The bodies were found around 2:30 a.m. at a home in Garden Grove.

Police Sgt. Ray Bex says a preliminary investigation revealed the victim had been suffering from a long term illness.