An Aeroflot Sukhoi Superjet-100 that caught fire on Sunday killing 41 on board after it made an emergency landing was struck by lightening, reports claim.
The aircraft burst into flames on landing at Moscow Sheremetyevo International Airport and 41 of the 78 passengers and were killed. It was on its way to Murmansk but returned 30 minutes after taking off.
Investigators probing the cause of the crash have made no official comment on the claims it was hit by lightning.
Aeroflot released a statement and said it mourns the loss of life on flight SU1492 Moscow-Murmansk.
The statement said: “Aeroflot extends its deepest condolences to the family and loved ones of those who lost their lives on flight SU1492 Moscow-Murmansk.
“The crew did everything in its power to save passenger lives and provide emergency assistance to those involved. Tragically, they were unable to save all of those aboard.
“Our thoughts and hearts are with those who have suffered an unspeakable loss. We mourn with you.”
Aeroflot published a list of survivors who have been identified so far.
The airline said families of those killed in the fire will each receive one million rubles ($15,300; £11,630), while the victims being treated in hospital will be given 500,000 rubles ($7,650; £5,815).