A special commission has been set up to investigate the collapse of a building in Kungur, Perm region, which resulted in the deaths of two children on Friday.
Investigators recovered the bodies of an 8-year-old boy and a 3-year-old girl from under the rubble on 72 Sverdlova ulitsa, Ria Novosti reported.
The Kungurskaya municipal library was located on the upper floor of the two-story building, which was built in 1917.
Early Friday morning, the floor of the library collapsed onto the two residential apartments below, Interfax reported.
Governor Viktor Basargin expressed his condolences to the families and friends of the victims and added that all necessary measures for "a thorough investigation into the cause of the accident" will be taken.
Two more people, a woman and a man, were taken to the hospital to receive treatment for their injuries, the Emergency Situations Ministry said.
A team of 59 people mounted a rescue operation to help victims, the ministry said.
The resettlement of the residents who lived in the 41-apartment building is now being addressed.
Investigators have opened a criminal case into the incident.