The United Nations-backed government in Libya has condemned an attack on the headquarters of the Interior Ministry.

The building housing the ministry, which is located south of Tripoli, came under attack on Thursday, the latest incident in months of fighting in the region.

"The Presidential Council of the Government of National Accord condemns in the strongest terms the terrorist bombing carried out by the air force of Haftar (eastern-based army) that targeted the headquarters of the Interior Ministry yesterday," the UN-backed government said in a statement.

"This cowardly attack is part of a series of attacks targeting civilian airports, government buildings, schools, hospitals, and residential neighborhoods that killed civilians, including women and children," the statement added.

Libya has been beset by heightened violence since April, as forces loyal to General Khalifa Haftar, holding eastern Libya, attempt to take over Tripoli from GNA forces allied to UN-recognized Prime Minister Fayez al-Sarra.

The North African country has been dogged by violence since 2011, following the ouster and death of former president Muammar Gaddafi.

The war has killed thousands and displaced millions as militant groups and human trafficking cells seek to impose their command in various regions across the country.

The UN has led calls for dialogue between the warring factions in order to stop the war and put the country on a recovery path.