The Tamil Nadu Police Force is the law enforcing agency of the state of Tamil Nadu, India. It is over 150 years old and is the fifth largest state police force in India.The administrative control of Tamil Nadu Police vests with the Chief Minister of Tamil Nadu who holds the portfolio of Home Minister. The supervision and coordination of Police is done by the Home Department, Govt. of Tamil Nadu. The force is headed by Mr. K. Ramanujam, IPS who is currently the Director General of Police (Law & Order). He is assisted by the Additional Director General of Police (Law & Order), currently Mr. S. George, IPS. For administrative purposes, Tamil Nadu is divided into four zones- North, South, West and Central. Each Zone is headed by one Inspector General of Police. The zones consist of Ranges and Cities headed by city police commissioners, DIGs ( Deputy Inspector General of Police) and SPs ( Superintendent of Police).