"The accident happened yesterday evening around Cele bus stop. The petrol-laden tanker caught fire on impact after a vehicle on high speed rammed into it," Ibrahim Farinloye of the National Emergency Management Agency (NEMA) told AFP.
"The driver and the conductor were burnt without recognition while several other people were injured in the ensuing stampede," he said.
He said the tanker driver had parked to check a burst tyre when the collision occurred, causing the tanker to spill petrol into drainages.
Farinloye said it took fire fighters several hours before they could put out the inferno.
Accidents involving petrol tankers happen frequently on Nigeria's poorly maintained roads because of speeding and disregard to traffic rules.