5. Chinese patrol ships enter Japanese waters
Four Chinese patrol vessels temporarily intruded into Japanese territorial waters off the Senkaku Islands in the East China Sea on Tuesday.
The Japan Coast Guard says the ships entered the waters near Uotsuri Island before 2:30 PM.
They stayed in the waters for about an hour and a half before moving on to the contiguous zone just outside the territorial waters. Coast Guard officials warned them not to enter the waters again.
It's the 8th day this year that Chinese patrol ships have entered Japan's waters off the Senkakus. The previous incursion was on March 22nd.
Japan controls the islands. The Japanese government maintains the islands are an inherent part of Japan's territory. China and Taiwan claim them.