PORT HARCOURT, Nigeria - Attackers who shut down an Agip oil pumping station in southern Nigeria on Tuesday night are still occupying the facility but talks are under way to persuade them to leave, a state official said on Thursday. Agip's parent company, Italy's Eni, earlier said the attack on the Ogbainbiri station in Bayelsa state had resulted in a significant decrease in output. Agip normally exports 200,000 barrels per day (bpd) through its Brass tanker terminal in Bayelsa.