17. The 1st-4th Respondents challenged the jurisdiction of this Court contending that the subject matter of this suit bothers on several killings ensuing as a result of tribal/ethnic differences which has no nexus with the jurisdiction of this Court as enshrined in the provisions of Article 9 of the Supplementary Protocol on the Court. The Respondents further contend that the Applicants have not disclosed any cause or reasonable cause of action. 18. The jurisdiction of this court to determine cases on human right violation is spelt out in Article 9 (4) of the 2005 Supplementary Protocol on the Court which provides: "The court has jurisdiction to determine cases of violation of human rights that occur in any member state". In line with the consistently held decisions of this Court, once an alleged violation is founded on an international or community obligation of the state, the jurisdiction of this Court is invoked. See SERAP V. FRN & 4 ORS, (2014) unreported, where this court held that: “the mere allegation that there has been a violation of human rights in the territory of a member state is sufficient prima facie to justify the jurisdiction of this court on the dispute, surely without any prejudice to the substance and merits of the complaint which has to be determined only after the parties have been given the opportunity to present their case, with full guarantees of fair trial.” See also Hissien Habre V Senegal (2010 CCJELR) pg.65. 19. In determining whether or not a reasonable cause of action has been established, this Court in Incorporated Trustees of Fiscal & Civic Rights Enlightenment Foundation v. Federal Republic of Nigeria & 2 ORS ECW/CCJ/JUD/18/16 defined cause of action as: “A matter for which an action can be brought, a legal right predicated on facts upon which an action may be sustained. It is the right to bring a suit based on factual situations disclosing the existence of a legal right. It is often used to signify the subject matter of a complaint or claim on which a given action or suit is grounded whether or not legally maintainable.” 9