Libya's new authorities are expected to formally declare the liberation of the country on October 23.
The National Transitional Council has said it would declare a new interim government within a month of liberation and hold elections for a constitutional assembly within eight months.
An NTC spokesman, Abdel-Rahman Busin, said preparations were under way for the ceremony. Initially the announcement had been expected to be made on October 22 in the eastern city of Benghazi.
The announcement would come three days after the death of Muammar Qaddafi and more than two months after the fall of the capital, Tripoli, to anti-Qaddafi forces.
The ousted Libyan leader was killed on October 20, but video showing him alive after his capture by former revolutionary fighters near his hometown of Sirte has raised questions about whether he was executed.
UN High Commissioner for Human Rights Navi Pillay and Amnesty International, among others, have urged a probe of Qaddafi's death.
Reports say there has been no agreement yet among Libya's new authorities over how and where to bury Qaddafi.
Qaddafi's body was on display in a commercial freezer at a shopping center in Misrata, with an autopsy reportedly planned.
compiled from agency reports