Muammar Gaddafi's grip on Libya is loosening by the day, but it is not over yet.
Battles have continued in the capital, Tripoli, on Thursday and rebel forces further east are preparing for a major fight for the city of Sirte, Colonel Gaddafi's hometown.
A television station loyal to Colonel Gaddafi is reporting that NATO warplanes are now bombing Sirte.
Colonel Gaddafi's whereabouts remain unknown, but he has issued an audio message to supporters.
Unconfirmed reports from rebel sources claim he is hiding in the Abu Salim neighbourhood, one of the main holdouts of forces loyal to him in the capital.
Rebel fighters earlier broke into a tunnel complex under Gaddafi's compound, searching for him and his loyalists.
Clashes were also taking place near the Corinthia Hotel, close to Martyr's Square, which was formerly known as Green Square.
Huge stockpiles of food and medicine hoarded by the regime have been discovered in the city.
A rebel spokesperson says there is enough food to feed a city twice the size of Tripoli and enough medicine for the entire country for a year.
Killings claimed
Amnesty International says it has received reports of abuses by both sides in the conflict.
More than 30 men believed to be loyalist fighters have been killed at a central military encampment.
At least two were bound with plastic handcuffs, indicating they had been executed.
Elsewhere in Tripoli, a British medical worker reported a hospital received the bodies of 17 civilians believed to have been executed in recent days by government forces.
The Libya Contact Group of international powers has ended a meeting in Turkey with a message for Colonel Gaddafi to turn himself in to avoid further bloodshed.
