The policemen had disappeared several days earlier from Zabul, apparently abducted by the Taliban and taken to Kandahar. With limited means for forensic identification, it took the police nearly a full day to resolve the confusion, Rasoolyar said.
The Taliban have repeatedly warned Afghans against joining the government or the military and police forces. Hundreds of Afghan policemen have been killed this year in ambushes, targeted killings and bombings.
Also Monday, police in Kandahar the birthplace of the Taliban stopped a tractor hauling roadside bombs, said Javid Faisal, the provincial governor's spokesman.
A firefight erupted as the police tried to stop the vehicle near the border with Pakistan, he said. The shooting set off the bombs, killing the driver and a second person on the tractor.
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AP Writer Amir Shah in Kabul contributed to this report.