Original title: Japan's Defense Ministry claims to have found Chinese submarines near its southern islands
(Observer News)
According to the US Naval Research Association News Network (usni News), the Japanese defense ministry said on the 12th that they found a Chinese submarine near the southern islands of Japan, and the Japanese Maritime Self Defense Force and aviation self defense force maintained surveillance on the submarine.

Screenshot of usni news report.
It is reported that the submarine was found by the Japanese self defense force when sailing northwest on the morning of September 10. Its sea area is located in the eastern sea area of Amami island between Kyushu Island and Okinawa. When the submarine was still in the diving state, it was considered to be a Chinese submarine, because a northbound Chinese 052d missile destroyer was found in the nearby waters on the morning of the 11th.
It is reported that on the morning of the 12th, the Chinese submarine reached the southwest sea area of Yokohama Island, Japan. Yokohama island is uninhabited and about 32 nautical miles away from Amami island.
Reported that Japan's defense minister Nobuo Kishi instructed the Defense Department to keep alert and collect all information. The Japanese Self Defense Force dispatched the P-1 maritime patrol aircraft of the first aviation wing of Luwu air force base and the P-3 Orion maritime patrol aircraft of the fifth aviation wing of Naha Air Force Base for air surveillance.