Raigad (Maharashtra): The large drums found floating off the Maharashtra coast last week were found to contain highly-flammable liquid hydrocarbon naptha, the Indian Coast Guard said on Monday.

Each of the drums was old and corroded and contained around 200 litres of the dangerous liquid naptha, a gasoline look-alike made from distilling petroleum and used mainly to dilute heavy oil to help it move through pipelines, make high-octane gas and for cleaning metals. Investigations are underway to determine their origins and ownerhip.