A bomb explosion in Khost province killed at least eight people including five NDS force members.
The explosion happened at around 1 pm in Khost province on Sunday, according to local police.
Police stated that at least eight people were injured in the blast.
A motobike was reportedly loaded with explosive and later was detonated at Mujahid square in the city.
All of the wounded individuals were taken to the hospital for treatment.
In a separate incident, a blast took place in Laghman province on Sunday afternoon.
Three Afghan national policemen were killed after a roadside bomb detonated in Mehtaralam, the provincial capital.
No group or individual claimed responsibility for both of the attacks.