It is indicated that on the night of August 31 in the apartment of the house there was a clap of air-gas mixture, which led to the collapse of the walls in three residential premises.

According to preliminary data, the owner of the apartment in which the gas leak occurred, a woman and a child from a neighboring apartment were hospitalized.

"According to this fact, investigators of the Investigative Committee of Russia in the Altai Territory are conducting a pre-investigation check," the report said.

Previously, rescuers evacuated 23 people due to a fire in a house in Biysk.

A preliminary cause of the fire was a violation of the rules for operating gas equipment.