Three dead after firefighting helicopters collide in California

Cause of deadly accident near Cabazon, about 90 miles east of downtown Los Angeles, not immediately clear

Three members of a firefighting helicopter crew were killed after their helicopter collided with another in midair and crashed while battling wildfires in southern California on Sunday evening, officials said.

The cause of the deadly accident near Cabazon, about 90 miles east of downtown Los Angeles, was not immediately clear, the chief of Cal Fire's southern region, David Fulcher, told a news conference early Monday.