At least 40 suspects were arrested Monday in connection with the killing of 11 persons including ten foreign tourists at a base camp of Nanga Parbat in Pakistan\'s Diameer district of Gilgit-Baltistan on Sunday. Army and police teams along with other supporting agencies are continuing search operation at Babusar Buner and Sarri Maiddo areas to arrest the culprits. Yesterday, Pakistani Prime Minister Nawaz Sharif described the attack on the foreign tourists in the Pakistani territories as the worst terrorist act against national sovereignty of his country.