Six Chinese surveillance ships briefly entered waters around islands claimed by both Japan and China, amid a bitter territorial dispute.
China said the ships were carrying out “law enforcement” to show jurisdiction over the islands, called Diaoyu in China and Senkaku in Japan.
Three vessels left after a short time and the other three have now also left, the Japanese coast guard said.
The move came after Japan sealed a deal to buy three of the islands.
Japan controls the uninhabited but resource-rich East China Sea islands, which are also claimed by Taiwan.
Three were in the hands of a private Japanese owner but the Japanese government bought them earlier this week.
The Japanese Coast Guard said the first two Chinese boats entered Japan’s territorial waters at 06:18 local time (21:18 GMT Thursday), followed by another fleet of four other ships just after 07:00.
Article courtesy of the BBC.