Protesters in the Libyan capital Tripoli accuse the government of killing civilians, as at least 30 people are reported to have been killed in the town of Bani Walid.
Government-backed forces say they are battling elements who are still loyal to the former leader Muammar Gaddafi.
The fighting has been going on for nearly a week.
Al Jazeera's Omar Al-Saleh reports from Tripoli.
Source: Al Jazeera