TRIPOLI, Sept. 20 (Xinhua) -- UN Support Mission in Libya (UNSMIL) on Thursday warned against attacks on residential areas in the capital Tripoli, as warring parties continue fighting.

The UNSMIL issued the warning in a statement, where it reminded the warring parties of the signed binding cease-fire agreement, and that exposing civilians to harm is prohibited by international Humanitarian Law.

Violent clashes continued in southern Tripoli between forces allied with the UN-backed government and the "7th Brigade" militia from the city of Tarhuna, some 80 km southeast of Tripoli, despite a recent UN-brokered cease-fire agreement.

The cease-fire agreement ended fighting that at least killed 78 and injured 210 others, mostly civilians, before it resumed four days ago.

Libya has been suffering insecurity and escalating violence since the fall of former leader Muammar Gaddafi's regime in 2011.