The National Investigation Agency(NIA) will probe a case in which a suspended Jammu and Kashmir Police deputy superintendent, Davinder Singh, was caught in south Kashmir while allegedly ferrying two terrorists to Jammu last weekend, an official spokesman said. Davinder Singh was arrested last weekend along with Naveed Babu, self-styled district commander of banned Hizbul Mujahideen, a new recruit Atif and an advocate Irfan Mir.