TRIPOLI, Oct. 29 (Xinhua) -- The UN Support Mission in Libya (UNSMIL) on Monday condemned the terrorist attack on Fug'ha area of Jufra District that killed five people.

"The UNSMIL strongly condemns the deadly attack on Fug'ha ... in central Libya in what local authorities say was a brutal act of revenge conducted by Islamic State (IS)," the mission said in a statement.

The attack resulted in the killing of four civilians, two of whom were executed in public, with at least nine abducted, said the statement.

The UN also called for protection of civilians and all parties to the conflict to "cease targeting civilians and civilian objects in compliance with International Humanitarian Law."

Five people were killed at dawn on Monday in a terrorist attack on government buildings in the Libyan central district of Jufra, some 650 km southeast of the capital Tripoli, a military source said.

Linking the Libyan cities of the west, east and south, Jufra has been under the control of the eastern-based army, led by Khalifa Haftar, since June 2017 when the area was cleared of militant groups.

In February, a suicide attack on a checkpoint in Jufra killed three army soldiers and destroyed the checkpoint as well as a number of vehicles.