NOT FOR DISSEMINATION IN THE UNITED STATES OR THROUGH U.S. NEWSWIRES

Underworld Resources Inc. (the "Company") (TSX VENTURE:UW) announces that the
expiry date for the outstanding warrants announced in the April 1, 2010 news
release has been extended from May 3, 2010 to May 14, 2010 to facilitate
exercise of the outstanding warrants.


Holders may exercise the Warrants before 4:30 p.m. (Vancouver time) on May 14,
2010 by surrendering to the Company at Suite 1500, 409 Granville Street,
Vancouver, British Columbia, V6C 1T2 the Warrant certificate, together with (i)
a duly completed and executed exercise form in the form attached to the Warrant
certificate; (ii) the original Warrant certificate; and (iii) a certified
cheque, bank draft or money order payable to Underworld Resources Inc. in an
amount equal to the purchase price of the number of shares subscribed for.


ON BEHALF OF THE BOARD OF DIRECTORS

Adrian Fleming, President and Chief Executive Officer
Underworld Resources Inc. (TSXV:UW)
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