“The ambulance team that arrived at the scene stated the death of the man and his wife, and also hospitalized the son of the dead in a medical facility,” said Olga Vradiy, a representative of the Main Investigation Department of the Investigative Committee for the Moscow Region, in a commentary to TASS.

According to the agency's source in law enforcement agencies, the preliminary cause of death of the spouses was food poisoning.

Earlier, 13 people died from surrogate alcohol poisoning in the Khanty-Mansiysk Autonomous Okrug (KhMAO).