Whenever it shall appear to the Commission that any person has engaged or is about to engage in any act or practice constituting a violation of any provision of this subchapter, or of any rule, regulation, or order hereunder, it may in its discretion bring an action in the proper district court of the United States, or the proper United States court of any Territory or other place subject to the jurisdiction of the United States, to enjoin such acts or practices and to enforce compliance with this subchapter or any rule, regulation, or order hereunder. Upon a showing that such person has engaged or is about to engage in any such act or practice, a permanent or temporary injunction or decree or restraining order shall be granted without bond. In any proceeding under this subsection to enforce compliance with section
of this title, the court as a court of equity may, to the extent it deems necessary or appropriate, take exclusive jurisdiction and possession of the investment company or companies involved and the books, records, and assets thereof, wherever located; and the court shall have jurisdiction to appoint a trustee, who with the approval of the court shall have power to dispose of any or all of such assets, subject to such terms and conditions as the court may prescribe. The Commission may transmit such evidence as may be available concerning any violation of the provisions of this subchapter or of any rule, regulation, or order thereunder, to the Attorney General, who, in his discretion, may institute the appropriate criminal proceedings under this subchapter.