Gran Tierra Energy Clarifies Security Incident in Colombia

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CALGARY, Jan. 30, 2013 /PRNewswire/ - Gran Tierra Energy Inc. ("Gran Tierra
Energy") (NYSE MKT: GTE, TSX:
GTE), a company focused on oil exploration and production in South America,
clarifies reports of a security incident in Colombia.

Colombia

Gran Tierra Energy confirms that three employees of contractors
providing services to Gran Tierra Energy have been illegally detained
by unknown individuals in the Putumayo Basin, Colombia. No employees
of Gran Tierra Energy were involved in the incident.

Relevant authorities have been advised and are managing the situation.
Gran Tierra Energy looks forward to the safe and secure release of the
contractors.

About Gran Tierra Energy Inc.

Gran Tierra Energy is an international oil and gas exploration and
production company, headquartered in Calgary, Canada, incorporated in
the United States, trading on the NYSE MKT (GTE) and the Toronto Stock
Exchange (GTE), and operating in South America. Gran Tierra Energy
holds interests in producing and prospective properties in Colombia,
Argentina, Peru, and Brazil. Gran Tierra Energy has a strategy that
focuses on establishing a portfolio of producing properties, plus
production enhancement and exploration opportunities to provide a base
for future growth.

Gran Tierra Energy's Securities and Exchange Commission filings are
available on a web site maintained by the Securities and Exchange
Commission at http://www.sec.gov and on SEDAR at http://www.sedar.com.

SOURCE Gran Tierra Energy Inc.

For investor and media inquiries please contact:

Jason Crumley

Director, Investor Relations

403-265-3221

info@grantierra.com

www.grantierra.com