In Chhattisgarh, at least 33 children were injured after a helium gas cylinder exploded inside the Vivekananda Vidya Noketan School campus in Ambikapur city in Surguja district, according to the police.33 children injured after helium gas cylinder explodes in Chhattisgarh schoolBriefing about the incident, Superintendent of Police Sunil Sharma said, “The incident took place after 2.15 pm on the school grounds during school lunch hours when three people who were using helium cylinders to fill air balloons got injured after the cylinder and the balloon burst.”As many as 33 school children also sustained minor injuries, he added.Injured taken to different hospitals: SPThe injured students were immediately rushed to different hospitals and some of them were undergoing media treatment.None of the children have been seriously injured, and all of them are under medical observation, Sarguja Collector Kundan Kumar said.“The police and district education officers will investigate the incident and take the necessary action,” he added.More details are awaited.