In the entrance of the house in Moscow, where three people were poisoned, they found a pair of hydrocyanic acid

This was reported to the emergency services.

“The arrived rescue unit carried out reconnaissance, as a result of which a significant excess of the concentration of carbon monoxide was revealed, and the presence of hydrocyanic acid in the air was also detected,” TASS quoted the agency’s interlocutor as saying.

Currently, the residents of the house have returned to their apartments.

Additional analyzes of air quality did not reveal deviations from the normative values.

The causes of the incident are being established.

The day before, three people were injured by an unknown substance in a house in the south-east of Moscow.