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. Libyan Rebels Retreat from Oil Port Under Fire from Pro-Gadhafi Forces VOA News March 13, 2011 A rebel fighter sits on a truck as he fires an anti-aircraft gun during an air strike at a rebel fighters checkpoint in Al Ugaila area along a road between the towns of Brega and Ras Lanuf, March 12, 2011 Photo: Reuters A rebel fighter sits on a truck as he fires an anti-aircraft gun during an air strike at a rebel fighters checkpoint in Al Ugaila area along a road between the towns of Brega and Ras Lanuf, March 12, 2011 Witnesses say Libyan rebels have been retreating from an eastern oil port under heavy shelling from advancing government forces, in another setback to an opposition movement trying to topple Libyan leader Moammar Gadhafi. Rebels were seen leaving the town of Brega Sunday, heading northeast along the coast toward the opposition-controlled town of Ajdabiya. Libyan state television declared that Brega has been "cleansed of armed gangs," but there was no immediate confirmation of that claim. Gadhafi's forces recaptured two other rebel-held towns west of Brega in recent days, using aircraft, tanks and heavy weapons to pound the lightly-armed and poorly-organized opposition fighters. The government took reporters on a tour of the towns of Ras Lanuf and Bin Jawad on Saturday. Opposition protesters backed by deserting army units took control of most of eastern Libya and parts of the west last month at the start of an uprising against Gadhafi's 42-year rule. Pro-government forces reclaimed the western town of Zawiya, near the capital, Tripoli, last week, but the rebels remain in control of the western city of Misrata, Libya's third-largest. Misrata residents reported hearing gun battles on the city's outskirts Sunday. It was not clear who was involved in the fighting. Gadhafi loyalists have staged several offensives to try to recapture the city in recent days. Libyan rebels and the Arab League have urged the international community to impose a no-fly zone over Libya to prevent air attacks by pro-Gadhafi forces on the opposition. Western powers say they are making plans for a no-fly zone but have doubts about its effectiveness and want a clear legal mandate before taking such action. Gadhafi's government appealed to foreign oil companies to resume exports from Libyan oil terminals, after many foreign workers left the country to escape the unrest. Libyan state television said the oil terminals are secure and urged their employees to return to work. 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? v=wall .