"The Prosecutor's Office of the Frunzensky District of St. Petersburg has organized an investigation on the report of the poisoning of children with chlorine in the pool in one of the fitness centers on Yaroslav Gashek Street," the message says.

As noted, specialists from Rospotrebnadzor, as well as employees of investigative bodies, are involved in the events.

Earlier, the city's ambulance station reported that eight children were poisoned by chlorine fumes while swimming in the pool.

Five of them are hospitalized.