Six Chinese surveillance ships which violated Japan's territorial waters around Senkaku islands in the mornning of September 14 have already left the area by 13:20 (Japan Standard Time), reports The 11th Regional Coast Guard Headquarters, Naha, Okinawa (including Senkaku Islands).
The Japan Coast Guard Patrol Vessels are still chasing them.

中国監視船６隻、領海を出る…海保確認し追尾中 : 社会 : YOMIURI ONLINE（読売新聞） http://www.yomiuri.co.jp/national/news/20120914-OYT1T00908.htm?from=tw