UK jets bomb a bunker in Col Gaddafi's birthplace of Sirte as Libyan rebels prepare to launch an offensive on the town.

Rebels say their administration is working out of Tripoli, where sporadic violence is reported. Col Gaddafi's whereabouts remain unknown.

The UN urges restraint from all sides amid reports of revenge killings. It can also release $1.5bn in frozen Libyan assets after a US-South Africa deal.