NBC4 Los Angeles said the helicopter belonged to the station. At least one person has been killed following a helicopter crash in Los Angeles. Key points and original sources are listed below.

• NBC4 Los Angeles said the helicopter belonged to the station. The authorities did not immediately confirm how many people were aboard.S1

• At least one person has been killed following a helicopter crash in Los Angeles.S2

• "At this point, we have not confirmed how many victims, or how many people, were inside the helicopter," LAFD Captain Branden Silverman says thewrap.com/">TheWrap.S3

• killed after news helicopter covering bus accident in Los Angeles crashesS4