Tokyo: A Japanese defence helicopter carrying four crew members has lost contact during flight training in central Japan.
According to Defence officials, the UH-60J lost contact today evening while flying over the Pacific Ocean about 30 kilometers (18 miles) south of Hamamatsu, a coastal city in central Japan.
Officials say a search and rescue effort is underway. So far, there has been no sign of the helicopter or its crew members.
No further details were available.
In August, another defence helicopter, an SH-60J, crashed off the northern Japanese coast, leaving three of its four crew members missing.