This is reported by the regional head office of the GUMVD.
“As a result of the incident, four adults who were in the house were injured,” the report says.
According to RIA Novosti, which refers to the regional Ministry of Health, two victims are in serious condition.
Earlier it was reported that the popping of the gas-air mixture occurred in a house in the village of Russko-Vysotskoye in the Leningrad Region.
One person was injured in the incident.