According to an official of the corporation, the incident occurred in the loading section of the depot.
As at the time of filing this report, men of the Oyo State Fire Service are battling with the inferno.
The fire incidence caused traffic gridlock around the Odo-Ona-Apata Road and Bembo-Government College Area.
The Apata depot of the NNPC was re-commissioned in October 2017 after long neglect