It was gathered the petrol tanker fell while trying to negotiate the bend with residents rushing to the scene to scoop petrol.
Eyewitnesses reported the clamour for petrol resulted into a spark as some of the residents used metal containers to scoop the product.
This led to an explosion which killed several people at once.
At the scene, the police tried to contain the situation as the fire raged.
A majority of the victims sustained third degree injuries and are currently at the University of Calabar Teaching Hospital.