Two men were arrested Friday morning after firing shots at the headquarters of a pro-Pyongyang group in Tokyo, police said.

The two men, identified by the police as right-wing activists Satoshi Katsurada, 56, and Yoshinori Kawamura, 46, drove in a van up to the gate of the General Association of Korean Residents in Japan, known as Chongryon, in Chiyoda Ward around 3:50 a.m. and Kawamura fired several shots.

The bullets hit the gate and no one was injured in the incident, the police said. The two men were immediately arrested at the site by policemen stationed nearby.

Chongryon was established in 1955 with the aim of protecting the rights of North Korean residents in Japan. It has local branches nationwide, and its main headquarters in Tokyo effectively serves as the North Korean embassy in Japan in the absence of diplomatic ties between the two countries.