Los Angeles Mayor Karen Bass offered prayers to the families and loved ones of the victims as three people were killed when a helicopter from NBC Los Angeles crashed while covering a bus accident. NBC news helicopter crashes in Los Angeles while covering deadly bus collision Key points and original sources are listed below.

• Los Angeles Mayor Karen Bass offered prayers to the families and loved ones of the victims as three people were killed when a helicopter from NBC Los Angeles crashed while covering a bus accident. An L.A. Metro bus and a passenger vehicle were involved in that...S1

• NBC news helicopter crashes in Los Angeles while covering deadly bus collisionS2

• A news helicopter covering a deadly bus crash in the Los Angeles neighbourhood of Chatsworth came down on Tuesday, killing three people, including a pedestrian.S3

• Los Angeles news helicopter crashes while covering fatal bus accidentS4