Several fires erupted at Mitiga International Airport in Tripoli, Libya after its jet fuel tank farm was "attacked", Libya's National Oil Corporation said on Facebook. The company provided no further details on the attack.
According to the corporation, a firefighter crew has arrived at the scene to contain the blazes.
Al Jazeera earlier reported that the airport had come under a rocket attack that hit a civilian plane.
In late April, the Haftar-led force announced it would cease hostilities during the holy month of Ramadan.
Libya has been torn apart between two rival governments, an elected parliament in the country's east, supported by the LNA, and the GNA in the country's west, for years since the assassination of the country’s long-time leader Muammar Gaddafi in 2011.