Search and rescue operations were underway late Wednesday after two U.S. Marine Corps aircraft crashed while refueling in mid-air during a regularly scheduled training exercise off the coast of Japan, the Marines said.
The aircraft -- a KC-130 and an F/A-18 Hornet -- had launched from Marine Corps Air Station Iwakuni in southern Japan. The accident occurred at around 2 a.m. Thursday, local time (12 p.m. Wednesday ET).
A U.S. official told Fox News that seven Marines were on board the two aircraft. Two aviators were on the F/A-18 Hornet, while five Marines were on the KC-130.
The Marines said in a statement that Japanese search and rescue aircraft responded and were aiding in the rescue effort. The statement added that the incident was under investigation.
This is a developing story; check back for more updates.