A U.S. Osprey military transport aircraft made an emergency landing at Matsumoto Airport in Nagano Prefecture around 3 p.m. on Tuesday.
Another Osprey also landed at the airport around 3:35 p.m. and left five minutes later.
No injury has been reported regarding the developments, according to prefectural government officials and others.
The airport closed temporarily from around 3:45 p.m., affecting some flight services, the prefectural officials said.
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