AZUSA, Calif. -- Authorities say three people found dead in a fire-gutted home in Southern California were all siblings who committed suicide.

Los Angeles County Coroner's Lt. Fred Corral tells the San Gabriel Valley Tribune that 47-year-old Christine Alva, 49-year-old Barbara Alva and 53-year-old George Alva all died from self-inflicted gunshot wounds to the head.

The three were found dead Dec. 6 in the aftermath of a house fire in Azusa.

Also discovered at the home were two dead dogs and two dead cats, along with 22 guns and thousands of rounds of ammunition.

Public records show the house was in foreclosure, and family friend Nora Dewester told the Tribune that the siblings were expected to move out the day they died.

Friends also say the siblings' father died earlier this year and their mother died several years ago.