Official: Suicide attack kills 2 in northwestern Pakistan

People attend a candlelight vigil for the victims of Monday's suicide bombing in Lahore, Tuesday, Feb. 14, 2017 in Karachi, Pakistan. Pakistan's cultural capital of Lahore on Tuesday mourned the victims of a suicide bombing the previous day that killed 13 people. Markets and businesses remained closed across much of the country's eastern Punjab province while flags at government buildings are at half-staff. (AP Photo/Shakil Adil) (The Associated Press)

A Pakistani security officer stands alert at the site of a bombing in Ghalanai in the Pakistan's tribal region of Mohmand, Wednesday, Feb. 15, 2017. A Taliban suicide bombing targeted the administrative headquarters of a tribal region in northwestern Pakistan on Wednesday, killing scores of policemen and two passers-by, according to officials. (AP Photo/Alamgir Khan) (The Associated Press)

Doctor treats an injured security officer at a hospital in Peshawar, Pakistan, Wednesday, Feb. 15, 2017. A Taliban suicide bombing targeted the administrative headquarters of a tribal region in northwestern Pakistan on Wednesday, killing scores of policemen and two passers-by, according to officials. (AP Photo/Mohammad Sajjad) (The Associated Press)

A local Pakistani government official says a suicide bomber has targeted the administrative headquarters of a tribal region in the country's northwest, killing two policemen.

Hameedullah Khan says Wednesday's bombing struck at the main gate of the tribal headquarters in Ghalanai, in the Mohmand tribal region.

No one immediately claimed responsibility of the attack.

Earlier this week, a suicide bombing killed 13 in eastern Pakistani city of Lahore. A breakaway faction of the Pakistani Taliban — the Jamaat-ul-Ahrar or Freedom Movement — claimed that attack.

The breakaway faction is based in the Mohmand area — part of rugged, lawless regions along the Afghan border which have long served as safe havens for local and al-Qaida-linked foreign militants.

Pakistan has waged several offensives against Islamic militants in recent years.