Pacific Fleet's small anti-submarine ship MPK-64 Metel takes part in the Russian Navy Day parade in Vladivostok.Yuri Smityuk / TASS
Three Russian vessels sailed in a contiguous zone near the disputed Senkaku Islands, Japan’s Foreign Ministry said on June 9.
The Russian vessels were spotted around the same time a Chinese vessel entered the zone, the Kyodo news agency reported.
“We have brought the matter to the attention of the Russian authorities through diplomatic channels,” Yoshihide Suga, a Japanese government spokesman, said, according to RIA Novosti.
The Japan-controlled Senkaku Islands are claimed by China and Taiwan.
China purchased a major part of the islands, which it calls Diaoyu, from a Japanese individual and put them under state control in 2012.
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