Spokesman Viktor Beltsov described the accident as a "hard landing" of a Tu-134. The NTV television channel said the plane landed on its fuselage after the landing gear failed to come down, the AP said.
Another ministry spokesperson, Irina Andrianova, said the plane belonged to the Russian airline UTAir, and that there were 57 people aboard. She had no further details about how the accident occurred, but said there was no fire after the crash.
Samara is about 900 kilometers (550 miles) southeast of Moscow.
As of the morning of May 12, 23 people remain in Kazan hospitals after the shooting that took place at School N175