Unknown airstrikes attacked a residential area south of the Libyan capital Tripoli late Saturday, killing two people and injuring 10 others, according to military and medical sources.

“Five airstrikes targeted sites in Abu Salim and Al-Fallah (southern Tripoli),” a government military source told Xinhua.

“We speculate the airstrikes were carried out by Haftar’s drones (army),” the source said, confirming that the strikes hit civilian sites.

A hospital in southern Tripoli received two dead bodies and 10 injured people, according to a medical source, who said the casualties were likely to increase.

The east-based army, led by Khalifa Haftar, has been leading a military campaign since early April to take over Tripoli from the UN-backed government.

The fighting so far killed more than 270 people and injured more than 1,300 others, and displaced more than 13,000 people.

Libya has been struggling to make a democratic transition amid insecurity and chaos ever since the fall of former leader Muammar Gaddafi in 2011.