Interior Ministry spokesperson Sediq Sediqqi said six policemen and six road construction workers were killed when the bomber struck in fiercely anti-Taliban Panjshir province. Local officials said 30 civilians were wounded.
"Six police were killed, and seven civilians," Abdul Aziz Ghairat, police chief of Panjshir province, told AFP. "A number of other civilians and security forces were wounded."
The mountainous northern province was an important rallying area for the anti-Taliban forces that helped toppled the militant group's government in late 2001.
The Taliban vowed to disrupt a presidential election in April but failed to pull off any major attacks and the vote went ahead mostly peacefully.
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