“A criminal case has been initiated on the basis of a crime under Part 3 of Art.
109 of the Criminal Code of Russia ("Causing death by negligence of two or more persons") ", - said in the message.
As specified, at the time of the fire, a 30-year-old woman and her two children were in the house.
"As a result of the fire, a woman and her child, a child, died, a four-year-old girl survived, and the child was hospitalized," the UK added.
Investigators establish all the circumstances of the incident.
The causes of the fire are being investigated.
Earlier, the investigating authorities of the Investigative Committee for the Sakhalin Region opened a criminal case after the bodies of three children aged from one to four years old were found during the extinguishing of a house in the city of Krasnogorsk, Tomarinsky District.