Petaquilla Minerals Ltd. Preliminary Response to Announcement by Inmet Mining Corporation

VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 09/06/12 -- Petaquilla Minerals Ltd ("Petaquilla" or the "Company") (TSX: PTQ)(OTCBB: PTQMF)(FRANKFURT: P7Z) notes the announcement by Inmet Mining Corporation ("Inmet") of Inmet's intention to make an offer to acquire all of the outstanding common shares of the Company (the "Offer").

Petaquilla cautions its shareholders that Inmet has not made a formal offer and no action is required by Petaquilla shareholders at this time. Petaquilla is in the process of considering and evaluating the announcement and shareholders are urged to take no action until Petaquilla has issued further communication with respect to the announcement and the Offer, if and when formally made.

About Petaquilla Minerals Ltd. Petaquilla is a growing, diversified gold producer committed to maximizing shareholder value through a strategy of efficient production, targeted exploration and select acquisitions. The Company operates a surface gold processing plant at its Molejon Gold Project, located in the south central area of its 100% owned 842 square kilometer concession lands in Panama - a region known historically for gold content. In addition, the Company has exploration operations at its wholly-owned Lomero-Poyatos project located in the northeast part of the Spanish/Portuguese (Iberian) Pyrite Belt and several other exploration licenses in Iberia.

On behalf of the Board of Directors of PETAQUILLA MINERALS LTD.

Joao C. Manuel, Chief Executive Officer

NO STOCK EXCHANGE HAS APPROVED OR DISAPPROVED THE INFORMATION CONTAINED HEREIN.

Contacts:

Petaquilla Minerals Ltd.

Joao C. Manuel

Chief Executive Officer

(604) 694-0021 or Toll free: 1-877-694-0021

(604) 694-0063 (FAX)
www.petaquilla.com