Temporary restrictions on the release and reception of aircraft were introduced at the airports of Bogulma, Kazan, Nizhnekamsk, Samara, Sochi, Ulyanovsk and Cheboksary, the Federal Air Transport Agency reported on Sunday.

Temporary restrictions on the release and reception of aircraft were introduced at the airports of Bogulma, Kazan, Nizhnekamsk, Samara, Sochi, Ulyanovsk and Cheboksary, the Federal Air Transport Agency reported on Sunday.

"Temporary restrictions have been placed on the arrival and release of aircraft," the agency said in a statement to Max.