A US Marine pilot has died after he ejected from his FA-18C+ fighter jet as the aircraft went down off the coast of Japan, the US military said in a statement on Thursday.The pilot, identified as Captain Jake Frederick, was located by a Japanese Maritime Self-Defense Force ship, the statement said. "He is pronounced deceased," it added.The US military provided few details about the incident, which occurred on Wednesday, other than saying the cause of the crash was under investigation.The pilot ejected about 120 miles (190 km) southeast of Iwakuni, Japan, the US military said on Wednesday.The accident occurred on the 75th anniversary of the Japanese attack on Pearl Harbor in Hawaii, which drew the United States into World War Two