Fresh fighting erupted in west Libya on Wednesday after two days of deadly clashes near the border with Tunisia.
The clashes have left at least 16 people dead, although there were no reports of any further fatalities.
Armed residents from the western town of Zuwarah have been battling with fighters from the nearby towns of Regdalin and Jamil.
The violence was sparked late on Monday when ex-rebels from Zuwarah were detained as they were patrolling the border region.
Zuwarah’s population is largely made up of the Berber ethnic group; their neighbours to the south are mainly Arabs.
They accuse their opponents of siding with slain Libyan leader Muammar Gaddafi during last year’s conflict.
The UN mission to Libya said it was deeply concerned about the violence and called on all sides to end the clashes immediately.