A suicide car bomb near a police station in a restive¹ province of north-west Pakistan has killed at least five people, police say.

巴基斯坦警方称，西北部某动荡的省份一座警察局附近发生汽车炸弹爆炸事故，至少五人死亡。

Some 25 people, including a policeman and some pedestrians²（行人） , were injured by the blast in Khyber-Pakhtunkhwa province, reports said.

The car exploded in Doaba, a town about 30km (18 miles) from Hangu district, reports said.

It is the latest in a series of attacks near the Afghan border.

The bomber³ had failed to strike the police station because of the security barricades⁴ outside the building, police said.

"The bomber, riding an explosive-packed car, blew himself up near the police station," local police official Abdul Rashid told the AFP news agency.

Part of the police station was demolished⁵（破坏） by the blast and the impact damaged at least 10 houses nearby, he added.

The area has seen a series of militant⁶ attacks and the Pakistani Taliban uses it as its base.

Earlier this month, at least four people, including three policemen, were killed in an explosion in Hangu.

More than 30 people, including women and children, were injured in the blast which took place near a police patrol van.