Eugene Hoshiko, Associated Press
In this Oct. 26, 2014, file photo, Japan Air Self-Defense Force crew members set up cordons to protect a mockup of the F-35 fighter jet during the annual Self-Defense Forces Commencement of Air Review at Hyakuri Air Base, north of Tokyo.

SALT LAKE CITY — Japan’s military said on Tuesday that it has lost contact with one of its stealth fighters, according to Reuters.

The military said that it lost contact with a Lockheed Martin F-35 stealth fighter that was flying over the Pacific Ocean close to the north side of Japan, Reuters reports.

The military has started a search for the missing aircraft and its pilot.

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According to the Japan Times, the Air Self-Defense Force in Japan said it lost track of the jet at 7:27 p.m. It’s still unclear if the pilot was ejected from the cockpit, too.

The missing F-35 had been “engaging in anti-fighter battle training with three other F-35A jets,” according to the Japan Times.

Defense Minister Takeshi Iwaya told reporters on Tuesday that the defense ministry “will put all our efforts to save the life (of the pilot) first.”

The F-35A squadron became operational on March 29, according to The Defense Post.