11.17am: I've had another chat with Xan Rice in Misrata, who has further, significant news on a rebel success in the city (see 9.35am).
Xan has been to see the badly-damaged eight-storey office block where, until yesterday, a large number of pro-Gaddafi snipers were holed up, terrorising the population from the city's highest vantage point. After rebels finally pushed the snipers out, Xan saw what they left behind, namely "thousands" of bullet casings, discarded uniforms and, chillingly, graffiti promising never to forgive the city's people and to return and punish them. He adds:
This has been the main objective of the rebels – to get these guys out of this building and surrounding buildings... this is a pretty big thing.