The badly beaten, bullet-riddled bodies of seven Afghan soldiers have been found dumped in an eastern province, according to an official.
Mohammad Ali Ahmadi, deputy governor in Ghazni province, said the victims had been kidnapped at various times, including while visiting their families.
Local residents found the corpses next to each other in Andar district, their hands still chained behind their backs.
No group has claimed responsibility for the killings, but Taliban militants frequently target Afghan troops as part of their insurgency against the US-supported government.
Mr Ahmadi said insurgents at times stop vehicles in search of people to "prosecute" for working for the government or security forces.
American-led foreign forces are reducing their presence in Afghanistan and have handed over primary responsibility for security to Afghan troops.