FONTANA, Calif. (AP) — Southern California authorities investigating the deaths of two children, a woman and a man in a home say evidence so far indicates a possible murder-suicide.

Fontana police spokeswoman Martha Guzman-Hurtado says, however, that detectives will continue to investigate before coming to that conclusion.

Police responding to the home at Monday found the bodies of a 12-year-old girl, an approximately 10-year-old boy and the two adults between the ages of 30 and 35.

The spokeswoman says the children and woman had multiple gunshot wounds and the man had a single wound to the head. A handgun was found at the scene.

No identities have been released.