Drummer Daniel Williams, who was one of the founding members of metal band Devil Wears Prada, was one of six people killed Thursday when a private jet crashed into a neighborhood in San Diego.

Dave Shapiro, a groundbreaking music executive in the heavy metal and hard rock scene, has died in a San Diego plane crash.

The National Transportation Safety Board is examining a mix of clues and said the aircraft did not have a flight data recorder, which would have provided more information.