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A news helicopter crashed while covering a separate SUV and Metro bus collision in Los Angeles.
Reports place the crash in Chatsworth or the San Fernando Valley, with the aircraft going down in a parking lot or between commercial buildings.
Authorities said three people were killed and one person was injured in the helicopter crash.
One report says at least one fatality occurred on the ground, while another identified a reporter, a pilot, and one unidentified person among the dead.
Why it mattersThree people died, and the crash raises safety concerns for live breaking-news coverage.
More context
The crash sparked a large fire and damaged nearby vehicles and storage containers.
Federal and local agencies, including the FAA and NTSB, are investigating the cause.