"We have many reports that some of Public Order Police commanders have close ties with Taliban, and sometimes even watch cricket matches together in police checkpoints. Collusion in this case is not impossible," Bakhteyari continued.
Attempted assassination - peace efforts
On the same day, Paktiya Governor Shamim Katawazi survived an assassination attempt in central Logar province, a close aide told German press agency dpa on condition of anonymity.
Katawazi's convoy was attacked on the Logar-Kabul city highway, but he managed to escape unharmed.
The assassination attempt came as officials in the province worked towards persuading Taliban militants to hold peace talks, local authorities said.
The government hopes to establish the province as a safe zone for a renewed round of peace talks with the Taliban, officials said.
Government ceasefire, but ongoing fighting
In northern Faryab province, the Taliban pushed back security forces to the outskirts of the Khawja Sabz Posh district of the province, giving them greater presence.
On Wednesday, the Taliban took over a large base in the district, killing at least 17 members of the security forces.