An explosion has been reported outside the headquarters of an aviation company near Ankara, in an incident the authorities have labelled a terror attack.

The country’s Interior Minister Ali Yerlikaya posted on X: “Unfortunately, we have martyrs and injured people.”

Initial images shown by the NTV television channel were of a large cloud of smoke in front of the entrance of Turkish Aerospace Industries (TAI), which is located some 40km outside the capital.

According to local media, gunshots were heard.

This is a developing story. More updates to follow.