An Airbus 310-300, owned by Novosibirsk-based S7, formerly Sibir, crashed early on Sunday killing more than a hundred people when it was making a routine flight from Moscow to the city of Irkutsk, about 3,000 miles east of the capital and the home airport for popular tourist destination Lake Baikal.
Preliminary reports suggest a fault with the brake hydraulic system might have caused the airliner to veer off the runway upon landing and burst into flames after hitting a concrete wall.
"At this point, we have discovered 124 bodies," the source said, adding that 52 people were in the hospital.
S7 said early Monday morning that 203 people had been on board, including eight crewmembers, revised upwards from the 200 thought to have been on the plane initially. At least 70 passengers who were in the plane's tail section survived the crash.