"While it is not known what caused the explosion,according to the school students the teenagers blew an object thatlooked like a cigarette lighter causing blown out windows anddamage the frame. Shrapnel wounded three people. Some children arein the state of shock," said a police source, as reportsUkrinform.
According to thechairman of the independent EMS trade union Anatoliy Sidorenko, twostudents were hospitalized and a teacher refusedhospitalization.
One of theteenagers has a blunt abdominal trauma and suspected head injury.The second child has cut wounds of the head andlimbs.
Police andprosecutors are on site.