CAMP PENDLETON–One Marine has died, eight service members remain missing and two were injured in an amphibious assault vehicle accident Thursday afternoon off the San Diego coast, according to Camp Pendleton officials.

The 15 Marines assigned to the 15th MEU participated in the Makin Island Amphibious Ready Group training exercise near San Clemente Island. During the training, water began entering in the amphibious assault vehicle.

“We are deeply saddened by this tragic incident. I ask that you keep our Marines, Sailors, and their families in your prayers as we continue our search,” said Col. Christopher Bronzi, 15th MEU Commanding Officer.

Search and rescue efforts are still underway with support from the Navy and Coast Guard.