A fighter jet has crashed in flames after apparently being shot down over the rebel stronghold of Benghazi in eastern Libya, reports the BBC's Ian Pannell in the city.

He reports seeing the jet plummet to the ground around 0900 (0700 GMT), but said it was unclear exactly what brought the plane down.

Explosions and gunfire have been heard across Benghazi despite Col Gaddafi's government declaring a ceasefire on Friday.

Meanwhile, leaders from the US, the UK, France, and Arab countries are to meet in Paris to discuss military action in Libya.

The summit comes after the UN Security Council approved a resolution that allows "all necessary measures", short of an invasion, to protect civilians in the north African country.