An online video showed holes in the tail section of the Azerbaijani plane that crashed Thursday in Kazakhstan and killed 38 people. Aviation experts said that Russian air defense fire was likely responsible for the crash of Azerbaijan Airlines' Embraer 190 that was en route from Baku to the Russian city of Grozny in the North Caucasus.

Azerbaijan Airlines flight J2-8243 caught fire as it tried to make an emergency landing in Aktau, southwestern Kazakhstan, on Wednesday. It was traveling from the Azeri capital Baku to Grozny, the capital of the Russian republic of Chechnya.

After an Azerbaijan Airlines jet crashed in Kazakhstan, speculation mounted about why the plane went down and whether possible Russian air defense action may have played a role.