A Chinese research ship has been operating in Japan's exclusive economic zone off Ishigaki Island. The Japan Coast Guard is calling on the ship's crew to halt its activities.
The coast guard says it confirmed the Dongfanghong 3 lowered what appeared to be observation equipment into the sea using a crane about 71 kilometers north of the island in southwestern Japan on Monday morning.
The coast guard said research in the area is unacceptable without Japan's consent.
Such activity by the Chinese ship has been confirmed in the area for three straight days.