The US military identified the one confirmed victim as Air Force Staff Sgt Jacob Galliher of Pittsfield, Massachusetts, on Saturday.

On Monday, divers from the Japanese navy and US military spotted what appeared to be the front section of the Osprey, along with possibly five of the missing crew members, Japan’s NHK public television and other media reported.

The US-made Osprey is a hybrid aircraft that takes off and lands like a helicopter but can rotate its propellers forward and cruise much faster, like an airplane, during flight.

Ospreys have had a number of crashes, including in Japan, where they are used at US and Japanese military bases, and the latest accident rekindled safety concerns.

The Pentagon said no such formal request has been made and that the US military is continuing to fly 24 MV-22s, the Marine version of Ospreys, deployed on the southern Japanese island of Okinawa.

Coast guard officials said the recovered pieces of wreckage include parts of the aircraft and an inflatable life raft but nothing related to the cause of the crash, such as an engine.

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