(WTRF) — Returning home from work, a Maryland homeowner found five people dead in his home in what police say was a murder-suicide, says ABC News.

Officers from the Charles County Sheriff’s office, responded to a residential home in La Plata, Maryland on Friday to find the homeowner at the front door with two women and three men dead. Authorities say the victims suffered trauma.

The preliminary investigation revealed the suspect, 28-year-old Andre Sales, entered the house and killed his ex-girlfriend, 21-year-old Sara Mann; her brother, 18-year-old Kai Mann; their mother, 48-year-old Sommaly Mann; and another man who was inside, 23-year-old Javon Watson. Police alleged Sales, shot himself with a gun.

There were two young children who were initially unaccounted for, but were later found safe and unharmed at a different location.

Police said it appears to be an isolated incident but investigators and forensic personnel are still processing evidence and interviewing family and friends to establish a motive.

The Office of the Chief Medical Examiner in Baltimore will perform autopsies to confirm the exact cause of death for each individual, police said.