File photo taken on a marine surveillance plane B-3837 shows the Diaoyu Islands and nearby islands. Photo: Xinhua

From Friday to Monday, four Japanese fishing vessels illegally entered the territorial waters of China's Diaoyu Dao. China Coast Guard (CCG) vessels took necessary control measures in accordance with the law and issued warnings to drive them away, according to CCG spokesperson Liu Dejun on Monday. 

Diaoyu Dao and its affiliated islands are China's inherent territory. 

"We urge the Japanese side to immediately cease all illegal activities in the waters. The CCG will continue to conduct rights protection and law enforcement operations in the territorial waters of Diaoyu Dao to safeguard national sovereignty and maritime rights," said Liu.

Global Times