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(r) any action or proceeding for a declaration or injunction affecting the validity of any executive or administrative action or decision by the Federal Government or any of its agencies; and (s) such other jurisdiction civil or criminal and whether to the exclusion of any other court or not as may be conferred upon it by an Act of the National Assembly: Provided that nothing in the provisions of paragraphs (p), (q) and (r) of this subsection shall prevent a person from seeking redress against the Federal Government or any of its agencies in an action for damages, injunction or specific performance where the action is based on any enactment, law or equity. (2) The Federal High Court shall have and exercise jurisdiction and powers in respect of treason, treasonable felony and allied offences. (3) The Federal High Court shall also have and exercise jurisdiction and powers in respect of criminal causes and matters in respect of which jurisdiction is conferred by subsection (1) of this section. (4) The Federal High Court shall have and exercise jurisdiction to [Section 251(4) is determine any question as to whether the term of office or a seat inserted by the of a member of the Senate or the House of Representatives has Constitution of ceased or his seat has become vacant. Federal Republic of Nigeria (First Alteration Act) 2010] 252. Powers (1) For the purpose of exercising any jurisdiction conferred upon it by this Constitution or as may be conferred by an Act of the National Assembly, the Federal High Court shall have all the powers of the High Court of a state. (2) Notwithstanding subsection (1) of this section, the National Assembly may by law make provisions conferring upon the Federal High Court powers additional to those conferred by this section as may appear necessary or desirable for enabling the Court more effectively to exercise its jurisdiction. The Constitution of the Federal Republic of Nigeria Updated with the First, Second, Third, Fourth and Fifth Alterations 165