"All commercial flights from Kabul airport have been suspended, only military aircraft are allowed to fly," the statement said.
Earlier, Chargé d'Affaires of the United States in Afghanistan, Ross Wilson, was evacuated from the diplomatic mission in Kabul and taken to the airport.
The website of the US Embassy in Afghanistan said that the security situation in Kabul is "rapidly changing": in particular, there are reports that the airport is "under fire."