The six-man boat from the port of Nemuro in northeastern Hokkaido prefecture (state) was seized in waters approximately 250 kilometers (155 miles) northeast of the city, said coast guard official Kazumi Konno.
The coast guard has been in contact with the Russian authorities and is awaiting further details about the seizure, Konno said.
Nemuro is about 36 kilometers (22 miles) south of disputed territory held by Russia but claimed by Japan, the AP reports.
Subscribe to Pravda.Ru Telegram channel, Facebook, RSS!