Explosion at US base in Japan injures 4 SDF members

An explosion at a US military base in Okinawa Prefecture, southern Japan, has injured four members of Japan's Self-Defense Forces.

The explosion occurred Monday within the US military's Kadena Air Base.

Prefectural officials say the blast occurred at a temporary warehouse for unexploded bombs. 

The facility, located in the Kadena ammunition storage area, is overseen by the prefectural government.

Four SDF members working at the depot were taken to hospital following the incident, suffering injuries including burns to their fingers, the report said.

None of the injured are in critical condition, it added.

Police are currently investigating the situation at the scene.