A helicopter crash in Colusa County, California, killed four people Sunday afternoon.
Authorities found the bodies at the site of the crash and declared the passengers dead on arrival. Authorities believe there were only four passengers on board. The names of the victims have not yet been released.
The cause of the disaster has not been identified, according to Colusa officials. Both the Federal Aviation Administration and the National Transportation Safety Board are investigating the crash.
"Once on scene, investigators will begin the process of documenting the scene and examining the aircraft," NTSB spokeswoman Jennifer Gabris told CNN. "Part of the investigation will be to request radar data, weather information, air traffic control communication, airplane maintenance records, and the pilot's medical records."
"NTSB investigators will look at the human, machine, and environment as the outline of the investigation," Gabris added.
The helicopter was reportedly a Robinson R66 with a Rolls-Royce engine.
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Original Author: Timothy Nerozzi
Original Location: Helicopter crash kills four in California