CNOOC (CEO.NYSE) has suspended production at another oil platform off northeastern China on Sunday after a ruptured pipe leaked crude oil into Bohai Bay, AFP reported. The state-controlled oil giant discovered the leak on Friday at the Jinzhou 9-3 oilfield, and estimated that 0.38 cubic meters (13.47 cubic feet) had been released into the water. CNOOC pledged to improve management after a 3,000 barrel spill earlier this year polluted 5,500 square kilometers in the Bohai Bay. The company was accused of covering up that accident, which happened in an oilfield jointly owned with ConocoPhilips (COP.NYSE). The State Oceanic Administration, the agency responsible for managing China’s seas, has said it plans to sue ConocoPhilips over the spill.