Rebels retreat in Ajdabiya after 'Nato air strike'
7 April 2011 Last updated at 23:25 BST
Rebels in eastern Libya say their forces have been mistakenly hit in an air attack by Nato jets.
Doctors in Ajdabiya told the BBC at least 13 rebel fighters had been killed by the strike on a rebel tank position.
Civilians are reported to be fleeing Ajdabiya after rumours spread that Gaddafi's forces were preparing to attack the city.
Wyre Davies reports from Ajdabiya.