speak or understand the Spanish language or, at the request of that indigenous person, public prosecutors assigned to the central public prosecution services and regional offices of public security and administration of justice are instructed to take the necessary steps to inform them, as quickly as possible, of their rights under the Constitution and the law. Decision A/008/2007 setting up an agency of the Prosecution Service specializing in handling indigenous persons. It is responsible for conducting preliminary investigations involving a person belonging to an indigenous people or community, which will have bilingual staff trained in the rights of indigenous peoples, cultural diversity and indigenous legal systems. The peoples concerned must be safeguarded against the violation of their rights, and be able to take legal proceedings, either on their own behalf or through their representative bodies, to ensure that these rights are effectively protected. 191.The principal rights covered by the decision are as follows: Ensure that the Prosecution Service provides interpreters and/or translators for those accused of any crime during the enquiries conducted during their detention, of whatever nature during the conduct of the preliminary investigation, also involve such experts, anthropologists, sociologists and any others as are required, whose expertise, apart from determining their membership of an indigenous culture, clarifies the influence and implications of that culture on the commission of criminal acts, where the accused is an indigenous person. Ensure that a counsel for the defence of the indigenous person is involved in the proceedings during the conduct of the preliminary investigation, particularly when the accused makes his or her statement to the prosecution. Decision A/008/2000 laying down guidelines for handling foreigners involved in the conduct of a preliminary investigation. The purpose of the decision is to instruct the Prosecution Service and its personnel as to how they must treat foreign nationals. The decision takes account of the rights enshrined in the Vienna Convention on Consular Relations and the Consular Convention between the United States of America and the United Mexican States. The principal rights covered by the decision are as follows: "FI VE . — Whe re an investigative agency of the Prosecution Service is aware of a crime involving a foreigner as a n accused person , the head o f the Prosecution Service investigati on unit shall observe the following procedure: I. Inform forthwith the competent consular representation of the accused’s arrest or appearance at a hearing ; II. Inform the accused of t he i r right to communicate with that consular representation, and to be visited by consular officials, who may speak with them and prepare their legal defen c e, unless the accused expressly objects thereto ; III. In taking the statement of the accused he shall be assisted by an expert translator pursuant to article 269, Section IV of the Code of Criminal Procedure for the Federal District ; IV. He shall apply to the relevant consular representative for the criminal record of the accused in his or her country of origin; and V. The head of the Prosecution Service shall make the necessary arrangements in his sphere of competence for the flow of information to the consular representation. " Decision A/001/2007 setts up the agency of the Prosecution Service specializing in handling tourists, for offences involving Mexican or foreign tourists. It establishes the agencies of the Prosecution Service specializing in handling tourists, which are to examine the commission of conduct probably constituting an offence where Mexican or foreign tourists are involved. Since persons belonging to an indigenous community who are tourists in the Federal District may be guilty of committing an offence, the decision may be a fundamental tool for protecting their rights as suspects. The specialized investigative agencies of the Prosecution Service referred to in the decision each have all of the current powers of the regional offices of public security and the administration of justice to carry out in their field of competence all functions for investigating and prosecuting crimes within the jurisdiction of the Office of the Attorney-General for the Federal District. The principal rights covered by the decision are as follows: To be informed of their rights; To communicate with the diplomatic or consular representation of their country, and to be visited by consular officials, who may speak with them and prepare their legal defence, unless the accused expressly objects theret; To be assisted by an expert translator when giving their statement to the prosecution pursuant to article 269, Section IV of the Code of Criminal Procedure for the Federal District. Circular C/001/2005 establishing the right for foreigners to notify their consular representatives of their detention in line with the following criteria: "Where a foreigner is detained in connection with the conduct of a preliminary investigation, pursuant to article 269 , section IV of the Code of Criminal Procedure for the Federal District , public prosecutors shall notify the circumstances by telephone and in writing to the diplomatic or consular representation of the detainee’s country of origin. The pr o visions of the previous paragraph shall be met where a detainee declares under oath that he or she is a foreigner,