The U.S. Navy has identified five sailors who died when a helicopter crashed in the Pacific Ocean off of Southern California.

The MH-60S helicopter crashed on Aug. 31 about 70 miles off San Diego during what the Navy says were routine flight operations.

Those killed were identified Sunday as: Lt. Bradley Foster, a pilot from Oakhurst, California; Lt. Paul Fridley, a pilot from Annandale, Virginia; James Buriak from Salem, Virginia, who was a naval air crewman 2nd Class; Hospital Corpsman 2nd Class Sarah Burns from Severna Park, Maryland; and Hospital Corpsman 3rd Class Bailey Tucker from St. Louis, Missouri.

The cause of the crash is under investigation.

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