At 14.40 on April 7, when clarifying the information, it was established that 5 people were hospitalized with a diagnosis of "carbon monoxide poisoning in a state of moderate severity". Among them are 2 children:
- 2 people (male born in 1997, female born in 1965) to the city hospital No. 7 in Kazan;
- 3 people, including 2 children (a woman born in 1997, a boy born in 2020, a girl born in 2018) to the children's Republican clinical hospital in Kazan.
The EMERCOM units were not involved.
The cause of the incident is being determined.