ISLAMABAD, Mar 4 (APP): Minister for Interior, Chaudhry Nisar Ali Khan on Friday took notice of installation of mobile phone towers in residential areas of Islamabad and directed the Federal Investigation Agency (FIA) to conduct an inquiry into the matter. In a statement issued here, he further directed the FIA to examine alleged illegal installation of mobile phone towers at inappropriate places in the Capital and also negative effects of their radiation on people’s health.