The rebels in Libya confirm they have the influential son of Gaddafi in their custody, and are facing only pockets of resistance in Tripoli. European capitals are calling on Moammar Gaddafi to leave immediately, but he remains publicly defiant. Live web streams from Al Jazeera English, Sky News, Reuters live blog, coverage at BBC.com, New York Times, photo gallery, Los Angeles Times
* 3 p.m. update: Mohammed Gaddafi, another son, has surrendered, Al Jazeera English reports on its live blog.
3:14 p.m.: Gaddafi goes on on state TV calling on tribes by name, "all the men and women," to march to Tripoli to defend the capital from enslavement. It's the third or fourth time Gaddafi has spoken in the last hour or so.
Top photo: Al Jazeera English. Inset: EPA, from Tunis