The entrance to Marine Corps base Camp Pendleton is seen...

The entrance to Marine Corps base Camp Pendleton is seen on Sept. 22, 2015, in Oceanside, Calif. Credit: AP/Gregory Bull

LOS ANGELES — A U.S. Marine died during a training exercise Wednesday at Camp Pendleton in Southern California, military officials said.

The Marine died of injuries sustained in a “tactical vehicle mishap” in the afternoon, the I Marine Expeditionary Force said in a statement.

The Marine's name was not released, and the cause of the incident was under investigation. Officials said the death was not related to Steel Knight, an annual, large-scale training exercise that began Monday on the base.

No further details were given.

The I Marine Expeditionary Force is the largest of the three Marine expeditionary forces and is located on the coast in San Diego County.

West Side School reopens ... Dozens displaced in Deer Park apartment fire ... Out East: Lumber & Salt Credit: Newsday

U.S. to blockade Iranian ports ... Islanders to miss playoffs ... Suffolk PAL donates equipment ... Mosques battle towns over expansion

West Side School reopens ... Dozens displaced in Deer Park apartment fire ... Out East: Lumber & Salt Credit: Newsday

U.S. to blockade Iranian ports ... Islanders to miss playoffs ... Suffolk PAL donates equipment ... Mosques battle towns over expansion

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME