As many as 10 students have been injured after a university in Tripoli was damaged by a Nato air attack in the Libyan capital, sources say.

The BBC's Jeremy Bowen witnessed damage to the university's cafeteria, which is said to be situated near a military site.

Meanwhile, Libyan TV has aired footage it says shows Col Gaddafi in Tripoli, reportedly filmed while the city was under Nato air attack.