Nine foreign tourists, including one American, as well as a tour guide and a guard were gunned down by 15 armed men who ambushed a camp in northern Pakistan, police and government officials said Sunday, NBC News reported. Five Ukrainians, two Chinese nationals and one American of Chinese origin, one Russian, one Pakistani security guard and a local guide were killed at a base camp for climbers attempting Nanga Parbat, officials said. The assailants, who were dressed in uniforms of the Gilgit-Baltistan Frontier Force, were able to escape the scene, however, the police claimed to have cordoned off the area and initiated a search operation. The province where the incident occurred is known for sectarian violence between Sunni and Shia Muslims. Prime Minister Mian Nawaz Sharif condemned the attack and called it an "immoral and inhuman act."