The Ibadan depot of the Nigerian National Petroleum Corporation (NNPC), located in Apata, has been gutted by fire.
Reports say the fire started at the loading section of the facility.
The development caused traffic gridlock on Apata-Abeokuta Road.
The depot was reopened two years ago after President Muhammadu Buhari ordered a turn-around maintenance of depots across the country to ease petrol distribution.
There has been no official statement on the matter.