Article 46 The Commission may resort to any appropriate method of investigation; it may hear from the Secretary General of the Organization of African Unity or any other person capable of enlightening it. Communication from States Article 47 If a State party to the present Charter has good reasons to believe that another State party to this Charter has violated the provisions of the Charter, it may draw, by written communication, the attention of that State to the matter. This communication shall also be addressed to the Secretary General of the OAU and to the Chairman of the Commission. Within three months of the receipt of the communication, the State to which the communication is addressed shall give the enquiring State, written explanation or statement elucidating the matter. This should include as much as possible relevant information relating to the laws and rules of procedure applied and applicable, and the redress already given or course of action available. Article 48 If within three months from the date on which the original communication is received by the State to which it is addressed, the issue is not settled to the satisfaction of the two States involved through bilateral negotiation or by any other peaceful procedure, either State shall have the right to submit the matter to the Commission through the Chairman and shall notify the other States involved. Article 49 Notwithstanding the provisions of 47, if a State party to the present Charter considers that another State party has violated the provisions of the Charter, it may refer the matter directly to the Commission by addressing a communication to the Chairman, to the Secretary General of the Organization of African Unity and the State concerned. Article 50 The Commission can only deal with a matter submitted to it after making sure that all local remedies, if they exist, have been exhausted, unless it is obvious to the Commission that the procedure of achieving these remedies would be unduly prolonged. 13