New Delhi, Apr 03 (ANI): The last rites of National Investigation Agency (NIA) Deputy Superintendent of Police Mohammad Tanzil, who was shot dead by unidentified gunmen in Uttar Pradesh’s Bijnor district on Saturday night, was performed in Delhi on Sunday. The officer and his wife were shot at by unidentified gunmen when they were returning from a wedding. A probe is on to ascertain the exact reason behind the attack.