A senior police official told journalists that children had found a live grenade on the street and brought it home believing that it was a toy. They pulled out its pin and the explosion killed a minor girl and her mother.
The girl's father and three other children too were injured in the blast.
Child killed, three injured in Bajaur IED blast
A neighbour was also injured when the wall of his house collapsed because of the explosion's impact. The injured were admitted to the district headquarters hospital, where they are in a serious condition.
Police have completed their initial report of the incident.
In February this year, a child was killed and three others were injured when their vehicle hit a remote-controlled bomb in Arang Tehsil of the Bajaur tribal region.
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