Libyan leader Moamer Gaddafi ruled out late Thursday negotiations with rebels struggling to oust him.
"There will no be talks with them until the Day of Doomsday," state television quoted Gaddafi as saying as he addressed supporters, DPA reported.
He called on tribes in Misurata, Libya's third largest city, to "liberate" it from rebels.
"This farce should end. It's a shame for you to accept this," he told the city's residents.
The city, 210 kilometres east of Tripoli, was taken over by the rebels in May, but has repeatedly come under attack by government forces.
In a series of recent addresses, Gaddafi has called on Libyans to "march" to retake towns controlled by rebels.
Meanwhile, the broadcaster Al-Jazeera reported that rebels had attacked a building in the Libyan capital Tripoli where government officials were meeting.
It quoted a witness as saying that the attack had targeted the chief of the Libyan intelligence service Abu Bakr Trabulsi.
There was no immediate word on Trabulsi's fate.
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