BBC News with Fiona MacDonald

Rebel forces in Libya have rejected the latest offer of a ceasefire from Colonel Gaddafi's government. Speaking in the eastern city of Benghazi, a spokesman for the rebels' Transitional National Council said there was no longer a military stalemate in Libya because Nato air strikes had improved the rebels' position. Peter Biles reports from Benghazi.

A spokesman for the opposition, Abdul Hafiz Ghoga, told a news conference that Colonel Gaddafi wanted a ceasefire because his forces were being destroyed by Nato air strikes, but Mr Ghoga said the opposition would not stop. Referring to a suggestion that there could be a political solution, which allowed Colonel Gaddafi and his family to remain "on the scene", Mr Ghoga said that was an impossibility. Asked about the deployment of military advisers from Britain, France and Italy to help the opposition, Mr Ghoga said none of the foreign advisers had yet arrived in Libya.

An Oscar-nominated film-maker has been killed in the Libyan city of Misrata. Tim Hetherington, who held British and American citizenship, was killed in a mortar attack in the city, where fighting is continuing between besieged Libyan rebels and forces loyal to Colonel Gaddafi. Speaking to the BBC, one of his close friends James Brabazon, paid this tribute to Mr Hetherington.

"He was much more complicated than just being married to one media or one way of telling a story. He was a very, a very rounded individual professionally. That really came out of just a strong desire to see, a strong curiosity about how other people live and to tell their stories."