According to «Vesti: Primorye» another earthquake has been registered in the sea of Japan. 

On June 20th at 14:35 an earthquake with the magnitude of 3.9 has been registered in the sea of Japan. The earthquake occurred not too far from the surface of the sea, on the depth of 10 km that can provoke a tsunami. The epicentre was located near Hokkaido island in Japan. 

新闻来源: www.vestiprim.ru