The Tamil Nadu Police functions under the purview of the
Home Department of the
Government of Tamil Nadu. It is headed by a
Director General of Police (DGP), who is designated as the Head of Police Force (HoPF). The DGP may be assisted by special and additional DGPs. The various functional wings of the police department are headed by an
Additional Director General of Police. For administrative purposes, the state has been divided into four police zones–North, South, West and Central, each headed by an
Inspector General of Police (IG). The zones are further divided into 11 ranges, headed by
Deputy Inspector General of Police, who oversee a jurisdiction of one or more districts and report to the IGs of the respective zones. There are 39 districts (excluding
Chennai district and including two
Railway Police districts), each headed by a
Superintendent of Police. These districts are further organised into 249 sub-divisions, each headed by a Assistant
Deputy Superintendent of Police (ADSP) or Deputy Superintendent of Police (DSP), and consists of several police stations under its jurisdiction. The Commissioners are assisted by Additional and Joint Commissioners, while Deputy Commissioners (equivalent to SP rank), and Assistant Commissioners (equivalent DSP rank) form the second level administrative structure. Each
police station is typically headed by an
Inspector, or in semi-urban and rural areas, by a
Sub-Inspector. A police station generally comprises Sub-Inspectors, special Sub-Inspectors,
Head Constables, and
Constables, who are responsible for routine policing and investigation. , there are 1,302 Law and Order Police Stations, 202 All Women Police Stations, 243 Traffic Police Stations, 47 Railway Police Stations, 27 Police Out Posts, and 30 Traffic Investigation Wings. • Intelligence: The Intelligence Wing is responsible for the gathering and dissemination of information relating to law and order. It consists of a Special Branch CID (Q Branch), Security Branch, Organized Crime Intelligence Unit, each of which is headed by a SP. The Q Branch is responsible for intelligence gathering on important and covert activities, which might cause disturbance to law and order. The Security Branch is responsible for the security arrangements for visits of VIPs, and providing protection to top government office holders. • Crime Wing: The Crime wing consists of Narcotics Intelligence Bureau, which deals with the prevention and control of banned
narcotic substances, and the Intellectual Property Right Enforcement Cell, which is responsible for handling cases with respect to
intellectual property rights and preventing
video piracy. • Economic Offenses Wing: The Economic Offenses Wing investigates cases of fraud with companies and financial institutions. It also consists of the Commercial Crime Investigation Wing, established in 1971, which investigates offenses relating to the misappropriation of government funds, and the Idol Wing, established in 1983, which deals with the prevention and recovery of antiques and idols. • State Crime Records Bureau: The divisions include the Police Computer Wing, Finger Print Bureau, Modus Operandi Bureau, and Statistical Cell. It is also responsible for the implementation and maintenance of the Crime & Criminal Tracking Network and Systems, an integrated system, which maintains the criminal records. It is also responsible for the implementation of e-services such as online complaint registration, tracking status of cases, downloading
First Information Report, and recovery of last documents. It also maintains databases of missing persons, and vehicles. The Modus Operandi Bureau is responsible for dissemination of information collected by the Intelligence Bureau within the police department. The Finger Print Bureau, established in 1895, is responsible for maintaining the
finger print records of criminals, and comparison of the same for cases. • Tamil Nadu Special Police Battalion: The battalion consists of 15 special armed force units spread across the state. It also operates a training centre, and an arms workshop. • Operations Wing: The Operations wing is composed of the Commando Force and Training School, and
Bomb Disposal Squads. The Commando Force is used for special operations such as anti-terrorist operations, and in
disaster management. • Special Task Force: The Special Task Force is headed by an IG, and are trained for counter insurgency and militancy operations, and aiding in rescue operations. • Coastal Security Group: The Coastal Security Group is responsible for the security of the -long coastline of the state. It operates various marine police stations, and outposts, and is responsible for maritime security, and security of ports and settlements along the coast. It operates patrols and provides support to the
Indian Coast Guard. • Railway Police: The Railway Police is divided into two districts, which are further sub-divided into seven sub-divisions and manages 47 Railway Police Stations and 10 Railway out posts. It is responsible for providing security to the railway stations, trains, and other rail infrastructure. • Social Justice and Human Rights Unit: The Wing was created in 1972, and is headed by an ADGP. It is responsible for investigation and prevention of
human rights abuses, and caste related atrocities. • Auxilary Units: The Auxilary Units include
Dog Squads, and horse mounted police units. • Training School: The Police Training School was established in 1896, which later became the Tamil Nadu Police Academy. It is responsible for the training of all police personnel in the department. • Technical Services: The Technical Services Wing consists of technical and operational wings. It manages the Emergency Response System and Central Control Room, data centers, and
passport verification. • Prohibition Enforcement Wing: The Wing is responsible for the prevention of manufacture and distribution of illicit and spurious
liquor. • Home Guards: The Home Guards unit was created as an auxiliary force, and aids the regular police and special units in traffic control, rescue and disaster management, and awareness programmes. == Personnel ==