The helicopter crashed around 7 p.m. NBC4 Los Angeles said the helicopter belonged to the station. Key points and original sources are listed below.

• The helicopter crashed around 7 p.m. near a one-story commercial building in the neighborhood of Chatsworth in the San Fernando Valley.S1

• NBC4 Los Angeles said the helicopter belonged to the station. The authorities did not immediately confirm how many people were aboard.S2

• At least one person has been killed following a helicopter crash in Los Angeles.S3

• "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.S4

• killed after news helicopter covering bus accident in Los Angeles crashesS5

• NBC news helicopter crashes and kills at least 3 in LA neighborhoodS6