Satellite images reportedly showed that North Korea deployed about 20 fighter jets at the Kalma International Airport in the eastern port city of Wonsan.

Voice of America (VOA) reported that Google Earth revealed the satellite images taken by France’s space center Centre Nationale d'Etudes Spatiales and Airbus on May 20.

The images shows 20 fighters that appear to be MiG-19 and MiG-21 about one-point-six kilometers southwest of the airport terminal and three more fighters 800 meters off the back of the terminal.

The VOA said that all the 23 fighters can be moved to the runways and main buildings of the airport.

The report said that a large number of fighters were never spotted at the airport except during the 2015 air show, suspecting that the North is utilizing the airport for military purposes.

North Korea remodeled and reopened the airport as a civil airport in 2015 as part of its efforts to develop the Wonsan area in order to attract international tourists.