Several Japanese military staff hurt in blast at US Kadena Air Base in Okinawa

Public broadcaster NHK reported that the facility belonged to Japan's Self Defense Forces and was used to temporarily store unexploded ammunition.

Tokyo: Several Japanese Self-Defense Force members were injured on Monday in an explosion at an ammunition storage area inside the US military's Kadena Air Base in Okinawa, southern Japan, defence ministry officials said.

None of the injuries were life-threatening, one of the officials said.

The facility is used to temporarily store unexploded ammunition.