A tribal police official in the area confirmed the incident and death toll.
Though no group has yet claimed responsibility, such attacks are usually
blamed on Baluch nationalist groups fighting for a greater provincial
autonomy.
Hundreds of civilians have been killed since Baluch rebels rose up in 2004
against the federal Pakistani government, demanding political autonomy and a
greater share of profits from the resources in the region.
The province is also a hotbed of Islamist militancy and sectarian violence
between majority Sunni and minority Shiite Muslim communities.
A US drone meanwhile near the Afghan border killed 12 suspected militants.
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