Detectives were searching for a motive for the killings carried out by Nathaniel Tennosuke Berhow on Thursday, his 16th birthday.

Pacific Gas & Electric Co. has notified more than 1.2 million people that they may have their electricity shut off for what could be the third time in a week and the fourth time this month.

Thousands were evacuated from their homes as wildfires burn simultaneously in Northern California's wine country and the Los Angeles area.

The majority of some 20,000 people forced from their homes by a wildfire that exploded during the weekend were told they could return home Monday night, though an army of firefighters continued battling flames in the rugged hills and canyons northwest of Los Angeles.