Police say a suicide bomber has killed a militant commander in northwest Pakistan.

Monday's attack on the outskirts of the city of Peshawar killed Haji Akhunzada, his son-in-law and at least one other person.

Akhunzada was a senior leader in the Ansar ul-Islam militant group, which operates in the Khyber tribal agency near the Afghan border.

Pakistani officials blamed A rival militant group, Lashkar-e-Islam, for the suicide bombing. Both groups have a history of killing each other's fighters.