NBC Helicopter Crashes in Los Angeles While Covering Deadly Bus Crash | 3 Dead

An NBC Los Angeles news helicopter crashed in Chatsworth, Los Angeles, Tuesday evening while several television helicopters were covering a separate deadly Metro bus crash in the San Fernando Valley.Three people were killed and one person was taken to hospital after the helicopter went down shortly before 7 p.m. on the 9100 block of North Mason Avenue.The helicopter crashed between commercial buildings and sparked a fire that damaged vehicles and storage containers. More than 50 firefighters responded to the scene.The earlier Chatsworth collision involved an SUV and a Metro bus. Two people were killed and six others were injured in that crash.The cause of the helicopter crash remains under investigation by the NTSB and FAA.This is a developing story.