A pair of bomb blasts targeting a Shiite mosque in Pakistan's northwest and security forces on the Afghan border killed four people on Thursday, AP quoted police as saying. The attack on the mosque in Kacha Pakka village in Khyber Pakhtunkhwa province killed two people and wounded six others, police spokesman Fazal Naeem Khan said. No one has claimed responsibility for the bombing. The second bombing occurred at the Chaman border crossing in the southwestern province of Baluchistan, said police official Atta Ullah. Two civilians were killed and eight others were wounded, including four paramilitary soldiers, Ullah said. The soldiers were apparently the target of the bomb, which was believed to be hidden in a refrigerator being moved across the border from Afghanistan by a group of laborers. There was no claim of responsibility for this attack either.