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In this image taken from video obtained Friday, Sept. 21, 2012 from the Shaam News Network, SNN, which has been authenticated based on its contents and other AP reporting, shows shelling of Rastan in Homs province, Syria Image Credit: AP

Amman: Rebel fighters trying to oust President Bashar Al Assad shot down a fighter jet as it flew over the northern Syrian town of Atarib in Idlib province, a witness said.

The witness, an independent journalist who asked to remain anonymous, said rebel fighters were attacking a military base near the town when the jet flew over and rebels shot it down with anti-aircraft guns.

Vastly outgunned, rebels say they need surface-to-air missiles to take down planes and helicopters used by the Syrian military to bombard opposition strongholds.

Fighters use outdated anti-aircraft machine guns that are welded to pickup trucks but they are inaccurate and useless if the military aircraft fly above a certain altitude.

On August 27 fighters shot down a helicopter on the outskirts of Damascus and three days later rebels said they had brought down a jet in Idlib, near the Turkish border.

Activists say more than 29,000 people, mostly civilians, have been killed in the 18-month-old revolt in Syria, which began with peaceful street protests that provoked a military crackdown and mushroomed into civil war.

Despite calling for Al Assad to step down, the West is wary of arming disparate rebel groups.