At least 16 people were killed in Libya’s capital Tripoli on Monday in clashes near Mitiga airport, health officials from the country said.

The fighting pitted the Special Deterrence Force (Rada), one of the most powerful groups in the city, against a rival group based in Tripoli’s Tajoura neighborhood.

Local media report that nearly 30 people were wounded in the clashes, which prompted a closure of the airport.

Mitiga is a military air base near the center of Tripoli that has been the city’s main airport for civilian flights since the international airport was partly destroyed by fighting in 2014.

The international airport remains out of service.

Libya has been rocked by fighting since the 2011 ouster and killing of Muammar Gaddafi.

The North African country’s political uncertainty has endured since, with various jihadist groups and human trafficking rings trying to create a base for themselves there.