There has been renewed fighting between rival militias on the outskirts of the Libyan capital, Tripoli.
On Friday, 43 people were killed and about 500 wounded during an anti-militia protest in the capital.
Prime Minister Ali Zeidan on Saturday urged all sides to "exercise maximum restraint".
A BBC correspondent says the latest fighting occurred when an armed convoy from Misrata entered Tajoura in an apparent attempt to enter Tripoli.
Misrata is about 200km to the east of the capital.
Armed groups halted the convoy, which then retreated 15km.
