Updated

A helicopter believed to belong to local news station KNBC/NBC4 Los Angeles crashed Tuesday night in Chatsworth, just blocks from the site of a deadly L.A. Metro bus crash that had killed two people and injured six others earlier the same day. The helicopter crash resulted in a fiery wreck that killed at least three people, sending a thick plume of black smoke over the area. The back-to-back tragedies drew widespread attention as authorities investigated both incidents occurring in close proximity within hours of each other.