Libyan leader Muammar Gaddafi on Sunday refused to surrender and pledged to emerge "victorious" from the fighting for Tripoli, in a new audio message broadcast on television.
"We will not, we will not abandon Tripoli to the occupants and their agents. I am with you in this battle," the Libyan strongman said.
"We do not surrender and, by God's grace, we will emerge victorious."
He called on his supporters to "march on (the district of) Tajoura in tens of thousands to purge the officials of the colonisers," in a reference to the NATO-backed rebels.
"Today we must take over Tajoura. I fear, if you let them, they will destroy Tripoli," he warned.
The second message in as many days from the veteran Libyan leader came as rebels launched an assault on the Libyan capital, saying it was expected to fall within hours.