Responds To Unsolicited Offer From Invecture Group

Toronto and Phoenix, AZ - December 3, 2008 - Frontera Copper Corporation (FCC:TSX, FCC.NT:TSX, FCC.NT.A:TSX) issued the following statement in response to the announcement by Invecture Group, S.A. de C.V., a Mexican registered company ("Invecture"), that Invecture is making an unsolicited offer to acquire all of the outstanding shares of the Company at a price of C$0.59 per share.

As previously announced, the Board of Directors has appointed a Corporate Finance Committee comprised entirely of independent directors (the "Special Committee") to review and consider a variety of corporate strategic alternatives. With the assistance of the Company's financial and legal advisors, RBC Capital Markets and Beach, Hepburn LLP, respectively, the Special Committee is committed to ensuring that maximum value is achieved for all stakeholders of the Company.

The Company advises shareholders to neither deposit any shares to the Invecture offer nor undertake any other actions concerning the offer until shareholders have received further communications from the Board of Directors.


ABOUT FRONTERA COPPER CORPORATION

Frontera Copper is a Canadian mining, development and exploration company whose principal activity is the production of copper cathode from the Piedras Verdes run-of-mine heap-leach copper operation in Sonora, Mexico. Based on the January 1, 2008 ore reserves and the estimated recoverable copper contained on the leach pads at December 31, 2007, approximately 1 billion pounds of copper are projected to be produced over the remaining 17-year life of the operation.

For further information, please see Frontera Copper's website at www.fronteracopper.com or contact:

Rodney Prokop
Vice President, Investor Relations
(602) 424-5483
ir@fronteracopper.com

Alan Edwards
President and Chief Executive Officer
(602) 424-5488