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A Sub-Divisional Magistrate is a title sometimes given to the head official of a district subdivision, an administrative officer that is sometimes below the level of district, depending on a country's government structure. Each district is divided into tehsil. It is empowered by tax inspector, Collector magistrate. All subdivisions (tehsils) are under the charge of SDM (Sub Divisional Magistrate).
Revenue functions involve maintenance of land records, conduct of revenue cases, carrying out of demarcation and mutations, settlement operations and functioning as custodian of public land. Sub Divisional Magistrates are designated as Assistant Collectors and Revenue Assistants and are primarily responsible for day to day revenue work. The subordinate revenue staff consisting of Girdavars, Kanungos and Patwaries are supervised by Tehsildars who are involved in field level revenue activities and mutations. They are also empowered to issue various kinds of statutory certificates including SC/ST & OBC, Domicile, Nationality etc. Registration of Property documents, sale deeds, power of attorneys, share certificates and all other documents which need to be compulsorily registered as per law is made at Sub Registrar's Office which are nine in numbers. Deputy Commissioners are Registrars for their respective districts and exercise supervisory control over the Sub Registrars.
Sub Divisional Magistrates are Returning Officers for Assembly Constituencies and Electoral Registration Officers in respect of Voters’ Lists. The District Officers are primarily responsible for conduct of Lok Sabha and Assembly Elections. They are also responsible for maintenance and revision of Voters’ Lists, for issue of Voters’ Photo Identity Cards (EPIC Cards) and Voters’ Certificates
Sub Divisional Magistrates exercise powers of Executive Magistrates. In this role they are responsible for operating preventive Sections of Code of Criminal Procedure. They also carry out enquiries in cases of unnatural deaths of women within seven years of marriage and issue directions to the Police for registration of case, if required.
Sub Divisional Magistrates are empowered to conduct enquiries into custodial deaths including deaths in Police Lock Up, Jails, Women Homes etc. The Officers of this Department are also expected to act as eyes and ears of the Government and conduct enquiries into all major accidents including major fires incidents, riots and natural calamities etc.
This department is given the primary responsibility for relief and rehabilitation operations in any calamity whether natural or man-made. It is also responsible for coordinating and implementing disaster management plan for natural and chemical disasters and awareness generation programme on disaster preparedness is being carried out with the assistance of United Nations Development Programme.
This department is also involved in management of migrant camps and distribution of relief and pension to J&K Migrants, Punjab Migrants and 1984 Riots Victims etc.