The China Coast Guard (CCG) on Friday monitored and tracked a Philippine vessel delivering living supplies to the country's illegal grounded warship in Ren'ai Reef, the CCG said in a statement on Saturday.
"China has indisputable sovereignty over the Nansha Islands, including the Ren'ai Reef, and its adjacent waters," it said, adding that the CCG is carrying out law enforcement activities in the sea areas under China's jurisdiction according to law.
