PESHAWAR (AFP) - Two Sunni men were shot dead Sunday in the second apparent sectarian attack in a restive town of northwest Pakistan in as many days, a senior police official said. Mohammad Shoaib and Asad Khan of in Dera Ismail Khan were killed one day after a Shia couple were shot dead by armed motorcyclists in the same town. The two men were coming out of a mosque when the gunmen opened fire, before escaping on a motorbike, police official Ehsanullah Khan told AFP. "It seems to be a sectarian killing," he added. So far no one has been arrested in connection with either attack.