CAMP PENDLETON, Calif. (KTLA) -- Authorities have identified a Marine killed when an amphibious assault vehicle that sank in a harbor at Camp Pendleton as a 27-year-old Iraq War veteran from San Antonio, Texas.

Marine Corps spokesman Lt. Justin Smith said Saturday that Sgt. Wesley J. Rice was unable to get out of the LVT-7 Amphibious Assault Vehicle when it sank in the Del Mar Boat Basin.

He was one three instructors in the vehicle along with three trainees. The five others who were on board escaped safely.

Rice was found at approximately 2:15 p.m. Friday and transported by Mercy Air to Scripps La Jolla, where he was pronounced dead at 2:47 p.m.

Rice served two tours in Iraq and won several awards, including a Combat Action Ribbon.

The training vehicle -- which moves Marines between ships and shore -- was part of the Amphibious Assault Vehicle Schools Battalion.

The Del Mar facility at Camp Pendleton is where they train all AAV's.

The Marine Corps is still not sure what caused the accident. It is now under investigation.