Both crew members escaped unharmed from a multipurpose military helicopter that made a crash landing at its camp in Tachikawa, western Tokyo, on Friday, the Ground Self-Defense Force said.

The UH-1J helicopter was being flown in an emergency landing training exercise when it came down at Camp Tachikawa at around 9:55 a.m. The chopper was split in half and its main rotor damaged. No fire was reported at the scene.

A pilot and co-pilot were on board at the time of the accident, according to the GSDF.

"We apologize for making residents in the neighborhood anxious," Defense Minister Takeshi Iwaya said at a news conference.

Multipurpose helicopters are used for transporting personnel and materials, and to carry out rescue missions during disasters.