Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Shelling in East Libya Forces Rebel Retreat VOA News April 09, 2011 A rebel fighter stands on the back of a pick-up truck mounted with a rocket launcher at a staging post on the road between Ajdabiyah and Brega in Libya, April 9, 2011 Photo: Reuters A rebel fighter stands on the back of a pick-up truck mounted with a rocket launcher at a staging post on the road between Ajdabiyah and Brega in Libya, April 9, 2011 Pro-government forces in Libya have shelled rebel fighters near Ajdabiya, challenging the rebels' hold on the city. The attacks Saturday forced rebels to retreat, slowing their westward advance toward the oil town of Brega on the Mediterranean Sea. Brega has gone from regime to rebel control and back again several times since the start of an uprising against the government of Libyan leader Moammar Gadhafi. Meanwhile, the Red Cross says a ship carrying medical supplies has docked in Misrata, a town that has been besieged by pro-Gadhafi forces for weeks. It is the only city in western Libya where rebels have been able to maintain control. Some information for this report was provided by AP, AFP and Reuters. Follow our Middle East reports on [1]Twitter and discuss them on our [2]Facebook page. References 1. http://twitter.com/VOAMidEast 2. http://www.facebook.com/pages/VOAMiddleEastVoices/124360240958667?%20%20%20%20v=wall .