Four individuals, a mix of visitors and staff, were poisoned by a chlorine-based chemical liquid in the pool of the "USSR" fitness club in Moscow. The incident, reported by Mash, occurred in the southern part of the capital, leading to the evacuation of 30 people.

Two of the affected individuals were taken to the hospital for treatment, while the other two declined hospitalization. The leak has prompted concerns about the safety protocols and maintenance practices at the fitness club, raising questions about the handling of hazardous substances in public facilities.