The cause of the crash of Azerbaijan Airlines flight J2-8243 near the city of Aktau, Kazakhstan, is still unknown. The Kremlin has so far been tight-lipped, prompting questions over its messaging.

The leadership in Moscow on Friday refused to comment on claims that a Russian missile had caused Wednesday's crash of an Azerbaijan Airlines passenger jet in Kazakhstan with the loss of 38 lives. Moscow was aware of statements made in Azerbaijan's capital Baku,

White House national security spokesman John Kirby told reporters that the US “have seen some early indications" that the plane was "brought down by Russian air defense systems."

After 38 people died in the crash, some experts said the plane may have been accidentally shot by Russian air defense systems in an area where Ukrainian drone activity had been reported.

Following the crash of a passenger plane in Kazakhstan, Moscow is cautioning against speculation that the aircraft may have been shot down, killing 38 people of the 67 people on board. "An investigation is currently under way;

Putin apologized for the “tragic incident” that occurred in Russian airspace, but the Kremlin did not take responsibility for downing the Azerbaijan Airlines flight.

By Guy Faulconbridge, Andrew Osborn and Nailia Bagirova MOSCOW/BAKU (Reuters) -President Vladimir Putin on Saturday apologised to Azerbaijan's leader for what the Kremlin called a "tragic incident" over Russia in which an Azerbaijan Airlines plane crashed after Russian air defences were fired against Ukrainian drones.

Russian President Vladimir Putin apologized for the deadly Azerbaijan Airlines Flight 8243 crash on Christmas but did not take responsibility for causing it as an investigation continues into the matter.

Russian President Vladimir Putin apologizes to Azerbaijani leader after the crash of an Azerbaijani airliner in Kazakhstan that killed 38 people.

The Azerbaijan Airlines Embraer 190 plane was flying from Baku to Grozny on Christmas Day when it diverted across the Caspian Sea and crash-landed near Aktau, Kazakhstan, killing 38 of the 67 people on board.

The Kremlin said Putin had "offered his apologies that the tragic incident had occurred in Russia's airspace."