It crash-landed in Kazakhstan, killing 38 of the 67 on board.

The Kremlin released a statement on Saturday noting Putin had spoken to Azerbaijan’s president Ilham Aliyev by phone.

“President Vladimir Putin apologised for the tragic incident that occurred in Russian airspace and once again expressed his deep and sincere condolences to the families of the victims and wished a speedy recovery to the injured,” it said.

In the Kremlin read-out made no direct admission that the plane had been struck by a Russian missile.

Prior to Saturday, the Kremlin had refused to say whether it was involved in the crash. But Russian aviation authorities had said the situation in the region was “very complicated” due to Ukrainian drone strikes on Chechnya.

Aviation experts and others in Azerbaijan believe the plane’s GPS systems were affected by electronic jamming and it was then damaged by shrapnel from Russian air defence missile blasts.

Survivors had previously reported hearing loud bangs before the plane crashed, suggesting it had been targeted.

Azerbaijan had not officially accused Russia this week, but the country’s transport minister said the plane was subject to “external interference” and damaged inside and out as it tried to land.

US defence officials on Friday had also said they believed Russia was responsible for the downing.

In a statement released a shortly after the Kremlin’s, Zelensky said the damage to the aircraft’s fuselage is “very reminiscent of an air defence missile strike”, adding that Russia “must provide clear explanations”.

“The key priority now is a thorough investigation that will answer all questions about what really happened.”

In Saturday’s phone call, Putin acknowledged that the Azerbaijan Airlines plane had repeatedly tried to land at Grozny airport in Chechnya on 25 December.

At the time, Grozny in Chechnya and Mozdok and Vladikavkaz in North Ossetia were being attacked by Ukrainian drones and Russian air defense systems had repelled those attacks, Putin said according to the Kremlin’s statement.

Moscow noted that Russian investigators had launched a criminal investigation. Azerbaijan had already announced it would launch an investigation.

The Kremlin said that Azeri, Kazakh and Russian agencies were “working closely at the site of the disaster in Aktau region”.