Mohammed Idris said Saturday that rebel forces entered the front-line town of Brega the night before and that government shelling and land mines killed 10 fighters.

He said rebel forces captured four government soldiers. It was unclear whether any other government troops were killed and whether the fighting had advanced the rebel front line.

Libya’s opposition received a boost Friday when more than 30 nations including the US recognized their National Transitional Council. But the civil war has fallen into a stalemate, with rebel forces unable to make significant advances, even while NATO bombs Qaddafi’s troops under a UN mandate to protect civilians.