Updated

A Los Angeles house fire that killed a man and his two children has now claimed the life of the mother.

Fire Capt. Jaime (JAY'-mee) Moore says the woman died at a hospital at about 1:30 p.m. Monday — about nine hours after the blaze at a Sylmar home.

Smoke inhalation is suspected in the death of the woman, her husband, their 12-year-old daughter and 8-year-old son.

Moore says all four had no pulses and weren't breathing when firefighters pulled them from the metal-sided barn that was built in the 1960s as a residence. The man and children were pronounced dead shortly thereafter.

Moore says the building was certified for residential use but lacked fire alarms and the owner could face criminal charges.

The cause of the fire is under investigation, but Moore says arson has been ruled out.