The Frontier Corps (FC) arrested 11 foreigners and an extremist during search operations here on Monday. Spokesman of FC said that the paramilitary troops conducted search operation in different localities of district Nushki of Balochistan. During operation 11 Uzbek nationals illegally staying in Pakistan and a terrorist of banned outfit were arrested. The detainees were being interrogated and more arrests were expected in the light of information provided by the detainees as investigation was in progress.