Militants stormed a high-altitude mountaineering base camp near Nanga Parbat in Gilgit-Baltistan, Pakistan and killed ten climbers, as well as a local guide.

The 2013 Nanga Parbat massacre was a terrorist attack that took place on the night of 22 June 2013 in GilgitBaltistan, Pakistan. About 16 militants, reportedly dressed in GilgitBaltistan Scouts uniforms, stormed a high-altitude mountaineering base camp and killed 11 people; 10 climbers and one local tourist guide. The climbers were from various countries, including Ukraine, China, Slovakia, Lithuania and Nepal. A Chinese citizen managed to escape the assailants, and a member of the group from Latvia happened to be outside the camp during the attack. The attack took place at a base camp on Nanga Parbat, the ninth-highest mountain on Earth. The mountain is popular among trekkers and mountaineers, and is typically toured from June to August because of the ideal weather conditions during these months.In November 2013, many of the assailants involved in the attack were arrested and tried under the Anti-Terrorist Act, although most of those who were arrested had been released by 2014; the identities of the actual perpetrators were never confirmed. According to the Pakistani Senate's standing committee on foreign relations, the original motive of the militants had not been to kill the tourists, but to kidnap them for ransom.

Nanga Parbat (Hindustani: [nəŋɡa pərbət̪]; lit. 'naked mountain'), known locally as Diamer (دیامر), is the ninth-highest mountain on Earth, its summit at 8,126 m (26,660 ft) above sea level. Lying immediately southeast of the northernmost bend of the Indus river in the Gilgit-Baltistan region of Pakistan-administered Kashmir, Nanga Parbat is the westernmost major peak of the Himalayas, and thus in the traditional view of the Himalayas as bounded by the Indus and Yarlung Tsangpo/Brahmaputra rivers, it is the western anchor of the entire mountain range.Nanga Parbat is one of the 14 eight-thousanders. An immense, dramatic peak rising far above its surrounding terrain, Nanga Parbat is known to be a difficult climb, and has earned the nickname Killer Mountain for its high number of climber fatalities.