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Libyan troops troops loyal to Muammar Gaddafi launched counteroffensive attacks against a number of rebel-held towns on Sunday as the uprising intensified into open warfare.

In Libya's Ras Lanuf, which is home to an important oil refinery, the fighting has been particularly heavy - but rebels there say the town remains in their hands.

Al Jazeera's Jacky Rowland is there and has been talking to the rebels.

Source: Al Jazeera