The crew of the An-148 aircraft crashed in the Moscow Region had not reported about the plane failure, Russian Investigative Committee's spokeswoman Svetlana Petrenko said on Sunday.
"It has been determined that no reports about the aircraft failure from the crew have been received," Petrenko said.
Petrenko noted that the criminalists have started examining the crashed plane with the use of the advanced equipment.
"The parts of the train and bodies of those killed are scattered across vast territory with the radius of no less than 1 kilometer [0.62 miles]," the Investigative Committee's spokeswoman said.
Earlier in the day, the Moscow Interregional Transport Prosecutor's Office and Southern Transport Prosecutor's Office have started checks in connection with An-148 crash in the Moscow Region.
The Russian Prosecutor General's Office has also said that the actions of air traffic control services and maintenance of the crashed plane will be legally assessed.