The Taliban has launched an attack at the airport in the city of Kandahar, Afghan officials said.
Samim Khopalwaq, spokesman for the Kandahar provincial governor, said the attack started with the Taliban targeting the facility’s main gate.
The sprawling Kandahar Air Field has military and civilian sections. Mr Khopalwaq said the attackers got into the air base where they encountered heavy resistance.
He had no information on casualties.
The Taliban is strong in southern Afghanistan, where the majority of people are Pashtuns, the ethnic group that dominates the militant movement.
The insurgents have stepped up attacks against Afghan troops since the withdrawal of all foreign combat forces at the end of last year.