REUTERS

"Turkey's national air carrier Turkish Airlines is operating flights from Istanbul and other Turkish cities in a number of localities in the area of increased terrorist threat, according to the request of the MP. At the same time, aircraft depart to different Russian cities from these Turkish airports," he told Russian information agency RBK.

Read alsoTurkey proves Su24 violated Turkish airpsaceAccording to Levichev, since the attitude of the Turkish authorities to the Islamic State terrorist group cannot be called negative, there is a high risk of infiltration of militants into Turkish airports, which may lead to an increase in the terrorist threat to the Russian aircraft.