A helicopter providing news coverage of a bus collision in Los Angeles crashed on Tuesday, killing a journalist, the pilot and a person on the ground, broadcasters and authorities said. A NewsChopper Four helicopter crashed while covering a story for NBC Los Angeles, leaving three people killed including the pilot and a beloved photojournalist. Key points and original sources are listed below.

• A helicopter providing news coverage of a bus collision in Los Angeles crashed on Tuesday, killing a journalist, the pilot and a person on the ground, broadcasters and authorities said.S1

• A NewsChopper Four helicopter crashed while covering a story for NBC Los Angeles, leaving three people killed including the pilot and a beloved photojournalist. The chopper crew had been on assignment covering a deadly bus crash that killed two. NBC’s Steve Pa...S2

• NBC News Los Angeles has confirmed that one of its news helicopters has crashed in Chatsworth and killed three people. KNBC Channel 4 news anchor Colleen Williams confirmed the news via a live broadcast on Tuesday, September 15. “We knew it was a news chopper,...S3