China coast guard patrols territorial waters of Diaoyu islands (Senkaku) on March 20

A fleet of Chinese ships sailed in the territorial waters of the Diaoyu Islands on March 20, the coast guard said in a statement on Wednesday.

The waters around Diaoyu Islands, which Japan calls the Senkaku Islands, are disputed and claimed by both China and Japan. The two sides have faced off in the waters, deploying patrol boats and urging the other to leave the area.