"Seven people were killed in a landmine blast," administrator Syed Musaddiq Shah told AFP.
He said it was unclear whether the blast was an intended attack or whether the ordinance had exploded accidentally, as the security situation in the area has improved remarkably.
Another administration official said seven people were injured in the blast, which occurred during a jirga meeting, between two tribes over a dispute about an office boy's job at a public school built on common land.
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