At least six Afghan police have been killed at a checkpoint in an assault likely to raise fresh security questions as the US prepares to pull troops out of Afghanistan.
Another four officers were killed by a roadside bomb as they travelled to the scene in Ghazni province's Qarabagh district, about 120km southwest of Kabul.
Wednesday's checkpoint attack was thought to have been an inside job in which fighters worked with a police officer stationed there.
"Probably one of the police officers at the checkpoint had a previous deal with the insurgents and co-operated with and facilitated the assault," Mohammad Ali Ahmadi, the deputy governor of Ghazni, said.
The Taliban claimed responsibility for the attack.
Earlier this month, three police were killed in a similar attack on their checkpoint in the same district.