12 Subcommittee on Prevention of Torture is authorized to visit any place of detention and make recommendations to State Parties concerning the protection of persons deprived of their liberty against torture and other cruel, inhuman or degrading treatment or punishment35. States who become parties to the Optional Protocol undertake: • to receive Subcommittee on Prevention of Torture in their territory; • t o grant unrestricted access to all places of detention, their installations and facilities, and liberty to choose such places; • t o grant opportunity to have private interview with the persons deprived of their liberty without witnesses, either personally or with a translator if deemed necessary, as well as with any other person who the Subcommittee on Prevention of Torture believes may supply relevant information; • t o provide unrestricted access to all the information regarding the number of the persons deprived of their liberty, the number of places of detention and their location, unrestricted access to all the information regarding the treatment of such persons and detention conditions, as well as to provide all relevant information the Subcommittee on Prevention may request to evaluate the needs and measures that should be adopted to strengthen the protection of persons deprived of their liberty against torture and other cruel, inhuman or degrading treatment or punishment; • t o examine the recommendations of the Subcommittee on Prevention of Torture and enter into dialogue with it on possible implementation measures36. Subcommittee on Prevention of Torture has not yet visited the Republic of Serbia. 2.2. National Preventive Mechanisms against Torture State parties to the Optional Protocol is obliged to set up, designate or maintain at the domestic level one or several visiting bodies for the prevention of torture and other cruel, inhuman or degrading treatment or punishment – National Preventive Mechanism (NPM)37, 35 36 37 The Optional Protocol, Article 11 item (а) The Optional Protocol, Article 12 and 14 The Optional Protocol, Article 3