Azerbaijan's flag carrier announced Friday that it will suspend flights to several Russian airports, citing potential flight safety risks after a crash of one of its planes that many experts blamed on Russian air defense fire.

Airlines are avoiding Russian airspace after an Azerbaijan Airlines flight crashed on Wednesday, killing 38 passengers. The Embraer 190 jet was bound for Russia from Azerbaijan — but veered off course after sustaining some kind of damage over Russia. It managed to reach Aktau airport in Kazakhstan before crash-landing. 29 passengers survived.

Azerbaijan Airlines, the carrier of the passenger jet that crashed in Kazakhstan on Christmas Day, said preliminary investigations have found the disaster occurred “as a result of physical and technical external interference,