The attackers, armed with sniper rifles, began the assault at around 3am local time (2200 GMT Sunday) and entered the police station, authorities in Pakistan's Draban region of Khyber-Pakhtunkhwa province said.
Malik Anees ul Hassan, the Deputy Superintendent of police in Draban, stated that "after entering the building, the terrorists used hand grenades which caused more casualties to the police”.
Elsewhere, a bomb blast after an election rally in Balochistan on Tuesday killed four people and was claimed by the Islamic State (IS).
Since the breakdown of a ceasefire between the Pakistani Taliban and the government in 2022, Pakistan has witnessed a renewed wave of attacks carried out by Islamist militants, with a particular focus on targeting security personnel.