An official in Russia's Investigative Committee said "not a single body fit for identification by relatives was discovered" at the scene of an airplane crash at the airport in Kazan, Tatarstan.
Dmitry Zakharov said on November 20 that more than 1,000 fragments from bodies of the 50 people killed in the crash on November 17 have been sent for DNA testing.
Zakharov said the impact of the plane when it hit the ground was so intense it created a large hole in the tarmac and scattered debris hundreds of meters away from the impact site.
In a related event, a bill banning operation of commercial jets in service more than 20 years was submitted to Russia's State Duma, the lower house of parliament.
The Tatarstan airlines plane that crashed had been in service for 23 years.
Based on reporting by ITAR-TASS and Interfax