Up to 40 police personnel have been killed as Taliban militants stormed a police base in Afghanistan's western Farah province, an official said Thursday.

The official, on the condition of anonymity, said that the Taliban militants attacked a police base in Bala Blok district at 09:00 p.m. local time on Wednesday, which lasted for several hours and after killing 40 police personnel, the attacking militants fled away.

The official also admitted that the militants attacked police checkpoints in Khak-e-Safid and Pushtrod districts on the same night, inflicting casualties to the police personnel.

Meanwhile, Dadullah Qani, a member of Farah's provincial council, has confirmed that 30 police personnel lost their lives in Taliban attack on Wednesday night in Khak-e-Safid district.

Taliban militants who have adopted aggressive approach and intensified activities since late April are yet to make comments on the situation in Farah's restive districts.