PUNTA PACIFICA, PANAMA--(Marketwired - May 19, 2015) - O'Hara Administration Co., S.A. ("O'Hara") announced today that it and persons acting jointly or in concert with it do not support the proposed acquisition by ALFA, S.A.B. de C.V. and Harbour Energy Ltd. of the outstanding common shares of Pacific Rubiales Energy Corp. ("Pacific Rubiales") and intend to oppose the acquisition.