During last day another 13 children, 4 of them being in severe state, were hospitalized in Chechnya. At present moment 4 victims of poisoning, 2 children and 2 adults, are placed in central regional hospital and 16 children - in children hospital of Groznyy. Source in Chechen Ministry of Emergency informed that symptoms of newly arrived children are the same - weakness, headache and asphyxia. Majority of hospitalized are girls. Diagnose will be established after receiving of analyses` results. The type of toxic substance, which caused poisoning of pupils and teachers, has not been established yet. A toxicological investigation is needed. Shelkovsky regional Office of Prosecutor instituted criminal proceedings according to article 236 of Russian Criminal Code.