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IRVING, TX -- (Marketwire) -- 01/23/13 -- (OTCQB: DYNR) DynaResource, Inc. ("DynaUSA") and its affiliate DynaResource de México SA de C.V. ("DynaMéxico"), the 100% owner of the San Jose de Gracia Project in Sinaloa State, México (collectively the "Dyna Parties") announce that they filed on December 27, 2012, an Original Petition and Application for Temporary Injunction and Permanent Injunction in the District Court of Dallas, Texas (the "Petition") against Defendants Goldgroup Mining Inc., Goldgroup Resources Inc., and certain individuals acting in concert with the two Goldgroup companies (collectively "Goldgroup").

The Petition alleges, among other things, that Goldgroup has wrongfully used property, confidential information and data belonging to DynaMéxico and consistently failed to disclose several matters of material importance to the public.

The Petition requests that Goldgroup be enjoined from: (a) using or disseminating any confidential information belonging to DynaMéxico, (b) asserting that Goldgroup owns any interest in the San Jose de Gracia Project, rather than owning a common shares equity interest in DynaMéxico, (c) improperly disclosing that Goldgroup is the operator of the San Jose de Gracia Project, rather than Mineras de DynaResource SA de C.V. ("Mineras"), and (d) failing to properly disclose that broad powers of attorney for acting on behalf of DynaMéxico are held by a DynaUSA senior executive.

The Petition further requests, among other things: (a) a temporary and permanent injunction; (b) declaratory relief; (c) disgorgement of funds alleged to have been improperly raised as a consequence of Goldgroup's wrongful actions; (d) cancellation of shares of DynaMéxico stock held by Goldgroup; and, (d) actual and punitive damages.

The Dyna Parties believe the filing of the Petition to be necessary in order to protect shareholder interests and in order to protect the property, data, and assets of the Dyna Parties.

DynaUSA - DynaMexico

DynaUSA (the "Company") is a Resource Investment and Management Company based in Irving, Texas, with a current focus on the San Jose de Gracia Project in Sinaloa State, México ("SJG"), targeting growth in the defining and production of gold and silver resources. The Company formed DynaMéxico in March 2000, specifically for the purpose of acquiring and consolidating the mining concessions and related assets of SJG. DynaMéxico currently owns 100% of the San Jose de Gracia District. DynaUSA currently holds 50% of the outstanding shares of DynaMéxico and Goldgroup holds 50% of the outstanding shares of DynaMéxico.

Exclusive Operating Entity at San Jose de Gracia

Under agreement with DynaMéxico, Mineras de DynaResource SA de C.V. ("Mineras") has been named the exclusive operating entity at the San Jose de Gracia Project. DynaUSA owns 100% of Mineras.

DynaMexico - President Holding General Powers of Attorney

The Chairman-CEO of DynaUSA, who also serves as the President of DynaMéxico, holds broad powers of attorney ("POA's") for DynaMéxico which were granted by the shareholders of DynaMéxico, and which POA's give the current President the same authorities as the body of the Board of Directors to act on behalf of DynaMéxico. During 2012, DynaMéxico executed several legal filings at various Civil Courts in Mazatlan, Mexico, including a Voluntary Jurisdiction Action ("VJA") filed March 7 and March 13 before the Judges of the First and Fourth Civil Courts (respectively). On March 14 and April 10 respectively, the Judges of the First and Fourth Civil Courts acknowledged the current President of DynaMéxico, and certified the POA's held by the current President as valid and effective, thus confirming each and every one of the rights and POA's which were granted to the current President in writing by the Shareholders of DynaMéxico.

On behalf of the Board of Directors of DynaUSA, and as President of DynaMéxico,

K.D. DIEPHOLZ
DynaResource, Inc; Chairman/CEO
DynaResource de México SA de C.V.; President



For further information on DynaUSA and DynaMexico, please visit www.dynaresource.com or contact:

Brad J. Saulter
V.P.
Investor Relations
T: 972-868-9066

K.D. Diepholz
Chairman / CEO
T: 972-868-9066