Southern African Development Community 3. State Parties may further agree upon any other form of mutual legal assistance consistent with their national laws. 4. State Parties shall designate a competent authority, the name of which shall be communicated to the Executive Secretary, which shall have the responsibility and power to execute and monitor requests for mutual legal assistance. 5. Requests for mutual legal assistance shall be made in writing to the competent authority and shall contain details of the following: 6. a) the identity of the authority making the request; b) the subject matter and nature of the investigation or prosecution to which the request relates; c) the description of the assistance sought; d) the purpose for which the evidence, information or action is sought; and e) all relevant information available to the requesting State Party and which may be of use to the requested State Party. A State Party may seek any such additional information which ibconsiders necessary for the execution of the request in accordance with its national laws. ARTICLE 15 LAW ENFORCEMENT State Parties shall establish appropriate mechanisms for co-operation among law enforcement agencies of the State Parties to promote effective implementation of this Protocol including the: a) establishment of direct communication systems to facilitate a free and fast flow of information among the law enforcement agencies in the Region; b) establishment of an infrastructure to enhance effective law enforcement, including suitable search and inspection facilities at all designated ports of exit and entry; Protocol on Control of Fire Arms, Ammunition and other related materials II