Japanese officials say an explosion at a storage site for unexploded ordnance at a U.S. military base on Japan’s southern island of Okinawa injured four Japanese soldiers.

June 9 (UPI) -- Four Japanese Ground Self-Defense Force Members were slightly injured in an explosion while handling an unexploded bomb at a depot near the Kadena Air Base, Okinawa on Monday, local and Defense Ministry Officials said.

OKINAWA - Several Japanese Self-Defense Forces (SDF) personnel were injured on Monday after an explosion rocked a facility inside the US military's Kadena Air Base in Okinawa. The blast occurred while the troops were preparing to carry out bomb disposal operations,