In early June a small plane flew into Bulgarian airspace from the northwest and landed at what used to be a commercial airport near Vidin. Apparently, the aircraft refuelled. It is unclear whether the pilot or pilots got any on-the-ground assistance from anyone or just poured fuel into the plane's tank from canisters. Guards from a private security company that was supposed to protect the ruins of Vidin Airport noticed the activity and alerted the local police. But the aircraft was quicker. It took off before the police arrived.