A Chadian armed group attacked a military camp of forces loyal to General Khalifa Haftar in southern Libya on Thursday, killing one and injuring 13 others, a local official said.
After the toppling of dictator Muammar Gaddafi in the NATO-backed uprising in 2011, fighters from neighboring Chad and Sudan joined the ensuing turmoil. Competing Libyan armed factions frequently accuse each other of deploying mercenaries from sub-Saharan Africa.
The attack took place near Traghen, 902 kilometers (560 miles) south of Tripoli and about 400 kilometers north of the border with Chad.
A spokesman for the Traghen municipality said the man killed was a fighter loyal to the Haftar-allied, eastern government in Libya.