And officials in the Himalayan town of Gilgit say the Karakoram Highway that links Pakistan with China has been blocked by landslides at several points.
Reuters reported that up to 60 tribesmen were blocking the Karakoram Highway in the small mountain town of Besham, 200 kilometres (125 miles) north of Islamabad.
Mortenson claims that he has educated over 60, 000 of young children and mostly girls and built over 170 schools in Karakoram -the north west of Pakistan and the Wakhan valley of Afghanistan near the Russia and China border during the last 17 years.