Lance Cpl. Armando Ortiz Canseco, 21, was declared dead on June 27, military officials said June 29.

Officials say multiple agencies are searching for a U.S. Marine who went missing during a training exercise off the coast of southern California

The Marine was reported missing from the USS Anchorage shortly after midnight on Thursday

Lance Cpl. Armando Ortiz Canseco, 21, was declared dead on June 27, military officials said June 29.

Lance Cpl. Armando Ortiz Canseco went missing from the USS Anchorage and was declared dead following an extensive search.