BBC: The Libyan ambassador to the UK has been expelled following attacks on British embassy premises in Tripoli.
Foreign missions in Libya's capital have been targeted by crowds angry at reports that a Nato air strike had killed a son of Col Muammar Gaddafi.
A BBC team there said the UK embassy building had been completely burnt out.
The foreign secretary said the Gaddafi regime had failed in its duty to protect it and that Omar Jelban had been given 24 hours to leave the UK.
Meanwhile, the United Nations announced it was withdrawing all its international staff from Tripoli after some of its facilities in the city were also attacked by angry crowds.
UK Foreign Secretary William Hague said: "The Vienna Convention requires the Gaddafi regime to protect diplomatic missions in Tripoli.
"By failing to do so that regime has once again breached its international responsibilities and obligations. I take the failure to protect such premises very seriously indeed."
The UK currently has no diplomats in the Libyan capital.
Foreign Office minister Alistair Burt said official lines of communication with Col Gaddafi's government would remain open, as other Libyan officials would stay in its UK embassy after the ambassador's departure. (+ video) » | Sunday, May 01, 2011