No further explanations were given. Vinogradov will fly back to Moscow on Thursday.
On Tuesday evening, three suicide blasts rocked the international terminal of Istanbul's Ataturk international airport, leaving at least 41 dead and 239 injured.
Turkish Prime Minister Binali Yildirim said that three suicide bombers participated in the attack. Initial indications suggest that Daesh is responsible for the terrorist attack, though the investigation is still underway.