COALINGA, Calif. — A Bell UH-1 helicopter that was involved in firefighting operations crashed under unknown circumstances 11 miles south of New Coalinga Municipal Airport in Coalinga, Calif., around 10 a.m. PDT.

The crash caused a new brush fire.

Please ask local authorities about the number of people on board and their conditions.

The FAA and National Transportation Safety Board will investigate.

The NTSB will determine the probable cause of the accident. Neither agency identifies people involved in aircraft accidents.