Tokyo, Nov 29 (EFE). Japanese police are investigating the launch of two devices near a U.S. military base outside Tokyo and suspect that farleft groups are behind the incident, public broadcaster NHK reported Friday.
Area residents notified police at 11:30 p.m. Thursday about two strong explosions near the Yokota Air Base.
Japanese security forces subsequently found two steel pipes, metal fragments, nails and batteries at a spot some 300 meters (983 feet) from the base.
The pipes were pointing in the direction of the base, but there is no evidence that any object fell within the grounds of the military facility, NHK said.
"We can confirm that there was an improvised launch of devices outside the Yokota base. No one was injured and thus far we haven't found any place that was damaged or suffered an impact," police said.