Taiwan has decided to recall its de facto ambassador to Japan to protest against the sinking of a Taiwanese boat by the Japanese coastguard near the disputed Diaoyu Islands in the East China Sea. 'The foreign ministry has decided to recall our representative stationed in Japan pending further instruction,' said Foreign Minister Francisco Ou Hung-lian yesterday. The development is expected to intensify the dispute between Taiwan and Japan, which do not have official ties. It will also complicate territorial claims, especially after the mainland moved ahead of Taiwan to condemn Tokyo over the sinking. In a hastily called news conference in Taipei yesterday, Mr Ou said his ministry had found unacceptable Japan's refusal to apologise and compensate the Taiwanese captain for the destruction of his boat. He said a report sent by Japan to his ministry yesterday said the case had been referred to prosecutors, and the captain of the Japanese coastguard ship Koshiki had been charged with negligence and injury of others. The Taiwanese skipper had been charged with illegal passage. However, Mr Ou said the report was 'totally unacceptable', and that his ministry had asked Taiwanese judicial authorities to investigate. He said his ministry would inform the Taiwanese captain, Ho Hung-yi, about the report and help him seek compensation from Japan. Mr Ho, who was arrested by the Japanese coastguard on Tuesday, returned to Taipei on Friday night after a strong protest and threat of war against Japan from Taiwan. Yesterday he accused the Japanese coastguard of deliberately ramming his boat, which was innocently sailing near the Diaoyus, which are claimed by Taiwan, the mainland and Japan.