A series of blasts at a warehouse for military vehicles in the Libyan capital Tripoli have sent a vast plume of black smoke into the sky, Press TV reported.
"We've heard at least 12 explosions," Ahmed Mohammed, a resident of the Abuseta district in the east of the Libyan capital told AFP on Saturday.
Meanwhile, a member of National Transitional Council (NTC) forces at the scene, Alaa Dali, said it may have been an accident but raised the possibility it was sabotage by Gaddafi loyalists.
There have been no significant attacks in the capital since the revolutionaries took over the city in early August. A single fire engine was sent to quench the fire, which charred the roof of the building.
There has been no immediate report on the cause of the blasts or possible casualties.
The blasts came a few hours after NTC announced its forces had entered Muammar Gaddafi's hometown of Sirte following fierce fighting with loyalists of the fugitive leader.
The revolutionary forces have been trying to gain access to Gaddafi's remaining strongholds, including Sirte and Bani Walid, for the past two weeks.
The revolutionaries captured the capital, Tripoli and Gaddafi's Bab al-Aziziyah compound last month.
Libya has been the scene of intense fighting between government troops and opposition fighters since the revolution seeking to topple Gaddafi began in mid-February.