Indonesia has declared a state of emergency around a port on Borneo island, officials said on Tuesday, after a large oil spill and fire killed four people at the weekend. Disaster mitigation officials were able to control the blaze in the port city of Balikpapan but were still working to contain the spill, which started on Saturday and spread over an area of around 12sq km. Indonesian police are questioning the crew of a bulk coal carrier over an oil spill that continues to pollute local waters. Police have taken fuel samples from the Panama-flagged MV Ever Judger, which remains in Balikpapan Bay. State-owned oil and gas company, PT Pertamina operations were proceeding as normal despite an oil spill that led to a fire. Pertamina said it was not responsible for the oil leak