Gunmen opened fire inside a mosque in eastern Pakistan on Friday, killing a Muslim prayer leader and another man in what police said was a dispute over the mosque's ownership.
Two other mosque visitors were injured in the shooting in the city of Faisalabad, which lies 250 kilometers (155 miles) southeast of the capital Islamabad and to the west of Lahore.
Armed men stormed into the mosque and opened fire on prayer leader Maulana Abdul Rehman as he was delivering a sermon on the Muslim Sabbath, regional police chief Zafar Abbas Lak told The Associated Press.
Lak said a police task force had been called up to hunt the gunmen, who fled after the shooting.
Previous mosque attacks have been linked to conflicts between rival Sunni and Shiite sects of Islam, but Lak said this attack appeared related a bitter fight between two groups that both claimed ownership of the mosque.