Three internal organizational units were established within the Internal Security Sector, namely:
Department for Internal Security;
Department of Electronics;
Department for support to the institutions of Bosnia and Herzegovina in Mostar.
The Department for Internal Security monitors and prepares regulations in the field of security and fire protection; performs physical, technical and fire protection tasks related to the control of entry, exit and movement of persons in the institutions of Bosnia and Herzegovina; issuing passes to parties and citizens to enter the building of the Parliamentary Assembly of Bosnia and Herzegovina and the Building of Friendship between Greece and Bosnia and Herzegovina, the Ministry of Foreign Affairs of Bosnia and Herzegovina, the Ministry of Defense of Bosnia and Herzegovina, Konak, the Central Election Commission, Building at Titova Street 9a, PSO Kumrovac, Building of the Institutions of Bosnia and Herzegovina at Đoka Mazalića Street, Presidency of Bosnia and Herzegovina, two buildings in East Sarajevo, Building of the Institutions of Bosnia and Herzegovina, former Union Banka at Dubrovačka Street No. 6, Building the institution of Bosnia and Herzegovina in Tuzla at Maršala Tita street no. 36, the institution of Bosnia and Herzegovina in Banja Luka at Jovana Surutka street no. 13 and two institutions of Bosnia and Herzegovina in Mostar; secures facilities and other equipment from destruction, damage and alienation; undertakes measures to prevent diversion; carries out anti-sabotage protection by inspecting persons and things brought into the building, performs fire protection tasks.
The Department of Electronics prepares prerequisites for the improvement of technology and rules that enable the proper functioning of information and telecommunications as well as other systems, takes care of the maintenance of technical equipment and devices, performs sound recording of the sessions of the institutions of Bosnia and Herzegovina, and controls the correctness of the maintenance of automatic telephone exchanges and related devices.
The Department for Support to the Institutions of Bosnia and Herzegovina in Mostar performs physical, technical and fire protection tasks related to the control of entry, exit and movement of persons in the facility in Mostar; passes are issued to parties and citizens to enter the facility; secures the building and other equipment from destruction, damage and alienation; take measures to prevent diversion; carries out anti-sabotage protection by inspecting persons and things brought into the facility. With the aim of efficient and high-quality performance of tasks within the competence of the Service, the Department for Support to the Institutions of Bosnia and Herzegovina in Mostar is operationally and physically separated and located in the building where the institutions of Bosnia and Herzegovina with their headquarters in Mostar are located, at the address Kneza Domagoja bb and the building in the street Kneza Višeslava bb in Mostar. In addition to the above-mentioned tasks, within the scope of the Department, ongoing maintenance of the facility, installations, devices is performed; provides heating and air conditioning of the working space; participates in technical inspections; arranges the interior and exterior of the building, maintains office furniture; performs cleaning of work rooms, sanitary areas, staircases, windows, glass surfaces, carpets and other textile materials located in the work rooms and outside them (external area of the building); provides catering services in the facility; prepares investment programs, estimates, projects and plans for investment and ongoing maintenance, performs professional technical supervision and participates in technical reviews and final calculations.