The Department of State Services (DSS) has given reasons why it arrested Tukur Mamu, the self-acclaimed Kaduna Train hostage negotiator. READ ALSO: Kaduna train hostage negotiator arrested in Egypt In a statement issued on Wednesday by Peter Afunanya, Public Relations Officer (PRO), Department of State Services, National Headquarters, Abuja, Mamu was arrested "to answer critical questions regarding the ongoing investigations relating to some security matters in parts of the country." "This is to confirm that Manu, as a person of interest, was intercepted by Nigeria’s foreign partners at Cairo, Egypt on 6th September,...