Senior Superintendent of Police Manu Maharaj said four students of the Urdu Middle School in Marwari colony of Khajenkala in Bihar were injured in the blast.
"Prima facie it appears to be the work of anti-social elements. A crude bomb was kept on the roof of the school building. While playing, some students touched it triggering the explosion," Maharaj said.
Police have begun a probe into the incident.
All four injured admitted in a hospital were said to be out of danger.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.