Five police officers were killed in a roadside bomb blast in eastern Paktika province early Saturday, officials said.
Seven other police officers were injured in the blast.
"The incident took place in Janikhil district of the province, when their vehicle fell prey to a roadside bomb," Provincial Governor's office said in a statement.
The victims have been taken to a nearby hospital.
No group including the Taliban has claimed responsibility for the blast.
Paktika province shares its border with Pakistan and off late, insurgents have been frequently targeting the Afghan security forces.