Yakuza weapons stash, including a loaded rocket launcher, found alongside the Fukuoka river

Who the frick these neighbors gonna' hit with a rocket launcher?

KITA-KYUSHU--Local police uncovered a cache of weapons, including a rocket launcher, hidden in tall grass along a riverbank that they presume were part of a yakuza arsenal.

The discovery was triggered by a call from a couple in their 70s who were taking a stroll around 4 p.m. on May 30 in the Osayuki-Higashi district of Kokura-Minami Ward.

They called police to report finding a box containing handguns.

Police went to the scene and found a plastic box measuring 33 centimeters by 37 cm by 42 cm. They also found several handguns and grenades.

A search of a wider area the following day turned up another container that yielded several more handguns, grenades and even rocket launchers.

Not only was the area covered in tall grass but barbed wire up to waist-high had also been set into the ground. Police believe a yakuza gang may have stashed their weapons there.

Fukuoka prefectural police will now try to determine if any of the weapons had been used.

In June 2012, prefectural police came across a Russian-made anti-tank rocket launcher and five handguns in a warehouse located in a residential district of Kita-Kyushu.

The city has long had to overcome an image of being a violent and dangerous locale because it was the head base of the Kudo-kai yakuza syndicate, once considered the most violent in Japan.