Businesses nearby have been closed as well as government offices in the area as fire fighters battle the blaze.
Emergency workers and Police have taken over the area, sealing it off from members of the public.
The Samoa Observer understands that firefighters are concentrating their efforts on preventing the fire from spreading to the other two tanks.
A senior police official said there is a fear that the other two tanks could explode. Fire-fighters and trucks from all over Upolu including Faleolo have been called to the area.
The fire can be seen from as far away as Siusega and Vaitele as black smoke covers the town.
Meanwhile, members of the public have been urged to keep far away from the burning tank at the Matautu Wharf.
The message comes from the Disaster Management Office (DMO) as firefighters battle the blaze.
“The DMO has been informed and updated from the on-site agencies Ministry of Police and FESA – the Public is to strongly advised to be cautious and stay away from around the area from the Matautu wharf to Sogi (coastal area – Main Beach Road) the agencies are responding accordingly and evacuating people and businesses that will be affected,” a statement from DMO says.
“There is a strong worry that the second pipelines and tank will blow up at this area.”.
SOURCE: SAMOA OBSERVER