Tripoli 'celebrating' news of capture
Colonel Gaddafi's son Saif al-Islam has been captured, Libya's interim justice minister is reported to have said.
Saif al-Islam was said to have been trying to escape when he was taken.
He is wanted by the International Criminal Court for alleged crimes against humanity during the uprising against his father.
The BBC's Rana Jawad says there were scenes of celebration in Tripoli.