A suicide bomber targeting a village police commander has blown himself up in a bazaar in a lawless part of eastern Afghanistan, killing seven people.
Afghan forces have been in the lead for security around the country since mid-June, when foreign forces handed over control.
The Taliban have stepped up attacks since then and also are seeking to take advantage of the withdrawal of foreign troops that will see all international combat forces leave Afghanistan by the end of 2014.
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A suicide bomber targeted a village police commander late on Friday in Qarabagh district of Ghazni province, said Mohammad Ali Ahmadi, the province's deputy provincial governor, on Saturday.
Almadi said the bomber on a motorcycle loaded with explosives killed local police commander Dawlat Khan, three of his men, and three civilians in a bazaar.
It is estimated that 50 to 70 Afghan policemen die every week.
In Helmand province, a roadside bomb in the Gerashk district on Saturday killed a family of four, including two children, police chief Hikmatullah Akmal said. A bomb also killed a police officer in a separate incident.
On Saturday, insurgents tried to kill the governor of northern Samangan province, Khirullah Anosh, with a remotely detonated roadside bomb. His spokesman, said the governor and three other people were slightly wounded.
In neighbouring Baghlan province, a police officer was killed when insurgents on Saturday tried to kill the provincial police chief with a remotely detonated bomb that exploded next to his convoy. His spokesman said Gen Asadullah Sherzad was not hurt in the attack.
Taliban spokesman Zabihullah Mujahid claimed responsibility for the Samangan and Baghlan attacks.
Another bomb killed two police officers and wounded four in central Ghor province.
