The Libyan airforce has bombed the oil refinery town of Marsa El Brega this morning, Al Jazeera reports.

The bomber struck close to where battles raged between regime opponents and Gaddafi loyalists in the rebel-controlled east of the country.

“We just watched an air force jet … fly over Brega and drop at least one bomb and huge plumes of smoke are now coming out ,” Al Jazeera’s Tony Birtley reported.

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The bomb, apparently an attempt to scare off anti-Gaddafi fighters at the nearby Brega university, hit a sand dune, witnesses said. No casulties were reported.

“All the fighters here are massing. We understand that something like 250-300 pro-Gaddafi fighters are inside Brega and they are being surrounded,” the Al Jazeera correspondent said.

However opposition forces appeared to have repulsed the attack by Gaddafi’s supporters, “They tried to take Brega this morning, but they failed,” Mustafa Gheriani, a spokesman for an anti-government group told the Reuters news agency. “It is back in the hands of the revolutionaries. He is trying to create all kinds of psychological warfare to keep these cities on edge.”