The Russian authorities are trying to conceal the fact of a drone attack on Chechnya. This attack may be connected to the crash of a passenger aircraft in Kazakhstan, according to Agentstvo.Novosti on Telegram.

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.

Azerbaijan is observing a nationwide day of mourning for the victims of the air crash that killed 38 people and left all 29 survivors injured as speculation mounted about a possible cause of the crash

Azerbaijani authorities believe the crash of an Azerbaijan Airlines plane in Kazakhstan that killed 38 people was caused by a Russian surface-to-air missile, several media reported Thursday. The jet was en route from the country's capital Baku to the city of Grozny in Chechnya,

Kazakh authorities have recovered the flight data recorder and an investigation is under way. Shortly after the crash, reports from Russian state-controlled TV said the most likely cause was a strike from a flock of birds.

Aviation experts say that Russian air defense fire was likely responsible for the Azerbaijani plane crash the day before that killed 38 people and left all 29 survivors injured.

Footage shows survivors walking and being dragged away from the tail section of a crashed Azerbaijan Airlines plane. Wednesday's flight from Baku to Grozny in the Russian republic of Chechnya was diverted across the Caspian Sea and went down near the western Kazakhstan city of Aktau.

At least 38 people were killed in an Azerbaijan Airlines crash that was likely caused by Russian antiaircraft fire, according to Ukraine and aviation experts. Photo: Azamat Sarsenbayev/Reuters

Officials in Russia and Kazakhstan are urging people to wait for an investigation into the deadly Azerbaijan Airlines plane crash before assigning blame.