Libyan leader Muammar Gaddafi's forces on Sunday pounded the outskirts of rebel-held Zintan in the Berber mountains southwest of Tripoli killing at least seven people, an AFP correspondent said.
Government forces posted a few kilometres (miles) to the east of Zintan, which remains under rebel control, fired Grad and Katyusha rockets at the town.
The AFP reporter said after visiting the local hospital that at least seven Libyan rebels were killed and 49 wounded in the bombardment.
One rebel vehicle that had four people inside was blasted by a Milan missile in the disputed village of Ryana some 12 kilometres (seven miles) from Zintan. The divided village is being fought over by pro- and anti-Gaddafi forces.
Tensions were also high between Zintan and Yafran, a region bitterly contested by rebels and loyalist troops.
Rebels reported Nato warplanes overhead on Sunday, but said there had been no air strikes for several days.
The correspondent said Yafran and nearby Qalah were desolated, with rubble strewn across deserted streets and homes looted.
Hospital staff in Yafran, on condition of anonymity, said foreign doctors were prevented from leaving by pro-Gaddafi forces, who allegedly detained and beat up some employees.