The China Coast Guard (CCG) said its Daishan vessel formation conducted a law-enforcement patrol in waters east of China's Taiwan Island on June 1.

The CCG said the move was a necessary response to the unilateral announcement made by Japan and the Philippines about maritime delimitation talks in the area, which infringed upon China's territorial sovereignty and maritime rights and interests. The CCG said it will continue to strengthen control over relevant waters and take measures to safeguard China's territorial sovereignty and maritime rights and interests.