A large area in the Meghna river has been polluted by furnace oil spill since a vessel with 11 lakh litres of oil sank in the river — posing threat to biodiversity and environment. The authorities concerned failed to lift the sunken vessel even after 36 (as of 4pm today) hours of the incident though two rescue vessels have left to recover it. Padma Oil Company has formed a four-member probe body to look into the incident and the committee was asked to submit its report within four days. Read: 7 missing after fishing vessel sinks in Karnaphuli River Two members of the probe body have visited the spot. Jamal Hossain, senior fisheries officer of Bhola Fisheries Department, said fish in the river will be in danger due to the oil spill.