TORONTO, ONTARIO -- Castillian Resources Corporation ("Castillian" or the "Company") (TSX VENTURE:CT) is pleased to report results from six additional drill holes in the "Pit Zone" target at its Hope Brook Gold Project located on the southwest coast of Newfoundland. Significant drill results are detailed in Table 1 below. Highlights from the Pit Zone, a near surface gold mineralized zone immediately southwest of the former open pit mine, include:

• 2.78 g Au/t and 0.21% Cu over 19.8m core length (14.9m true width) from 4.9m to 24.7m including 4.17 g Au/t and 0.58% Cu over 6.2m core length (4.7m true width) and 5.36 g Au/t and 0.09% Cu over 4.3m core length (3.2m true width) in Hole HB11-017

• 1.91 g Au/t over 20.0m core length (15.0m true width) from 38.1 to 58.1m including 3.88 g Au/t over 4.0 core length (3.0m true width) in Hole HB11-014

• 1.60 g Au/t over 21.8m core length (16.4m true width) from 16.0m to 37.7m including 3.80 g Au/t over 2.4m (1.8m true width) in Hole HB11-013

• 1.79 g Au/t and 0.30% Cu over 11.0m core length (11.0m true width) from 7.3m to 18.3m in Hole HB11-016.

To date eight shallow drill holes have been completed across the 500m strike length of the Pit Zone indicated by historic drilling as shown in Figure 1, a plan map, and Figures 2 and 3, vertical longitudinal sections. All holes have intersected significant gold values with several holes also having copper mineralization similar to values reported for the historic mine resource. Interpretation of airborne and ground geophysical data indicates that the silicified zone hosting the gold mineralization extends at least another 800m along strike to the southwest. Responses for both resistivity indicating silicification and chargeability indicating the presence of sulphides along this additional potential extension are very comparable to responses across the 500m long section already drilled.

Dr. Bill Pearson, P.Geo., President & CEO of Castillian, commented: "The continued positive results from the Pit Zone are very encouraging. We are now in the process of completing a second and third tier of holes approximately 50m and 100m respectively below the first series to further confirm the downdip and along strike continuity. Induced polarization surveys over the area indicate that the silicified zone likely extends to a depth of at least 100m. We are using a drill hole pattern that is designed to optimize potential resource definition as well as evaluate further extensions of the target zone."

A track mounted diamond drill is being used to accelerate the delineation of the Pit Zone to provide data for a National Instrument 43-101 resource estimate later in 2011. The second larger drill is currently drilling Hole HB11-023 which will further test the downdip extension of the Mine Zone below the 4800 level, the lowest level previously mined approximately 340m below surface. As shown in Figure 3, Hole HB11-023 is targeted to intersect about 50m above and between the pierce points of historical holes CW-100 and CW-104 for which Nil values were reported however these historical holes do not appear to have been drilled deep enough to fully test the target zone.

To date a total of 5,622.1 m in 22 drill holes have been completed of which eleven holes have been previously reported (see press releases November 17, 2010, December 1, 2010, January 21, 2011 and March 23, 2011). Collar coordinates and orientations of diamond drill holes in the current program are listed in Table 2.

SAMPLING, ASSAYING AND QUALITY CONTROL

The core (NQ 47.6 mm and BTW 42.0 mm) is logged, photographed and then sawn in half with one-half sent to the laboratory for analysis and the other half retained and stored on site. All core samples were prepared and assayed at ALS Chemex with sample preparation done in Sudbury and analytical work in Vancouver. All locations of ALS Chemex are ISO 9001:2000 certified. The entire sample received is weighed and crushed to = 70% passing 2mm (10 mesh); a sample split of up to 1000g is then pulverized to = 85% passing 75 microns (200 mesh) to produce a homogenized sample. A 50g aliquot is used for fire assaying with an atomic absorption (AA) finish to determine gold concentration. Internal quality control includes the use of blanks, duplicates and standards in every batch of samples. The Company also conducts internal check assaying using certified external reference standards and blanks. Regular external check assays are performed at a second certified Canadian commercial laboratory. Castillian also inserts external reference standards as well as blank granite drill core in each sample batch as a further external check.

Mr. Dan Lee, P.Geo. Chief Geologist and Project Manager for Hope Brook and Dr. Bill Pearson, P.Geo., President and CEO of Castillian, both of whom are qualified persons as defined by National Instrument 43-101 ("NI 43-101"), have reviewed and approved the scientific and technical content of this press release. Dr. Chris Hale, P.Geo., Chief Geophysicist for Castillian and a qualified person as defined by NI 43-10,1 has supervised all geophysical work at Hope Brook and has reviewed and approved the scientific and technical content of this press release.

ABOUT CASTILLIAN

Castillian Resources Corp. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol "CT" which has gold and base metal properties in Canada and South America. Castillian's flag ship property is the Hope Brook Gold Project located in southwestern Newfoundland where it is carrying out a 15,000 metre diamond drill program.

Cautionary Note Regarding Forward-looking Information

This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, statements with respect to the diamond drill program at the Hope Brook project and its anticipated results, the exploration program and anticipating timing and costs with respect to the exploration program and the completion of a NI 43-101 compliant resource estimate, future financial or operating performance of the Company, its subsidiaries and its projects, statements regarding exploration prospects, the identification of mineral reserves and resources, exploration expenditures, timing of future exploration, requirements for additional capital,. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: general business, economic, competitive, political and social uncertainties; the actual results of current exploration activities; future prices of mineral prices; failure of plant, equipment or processes to operate as anticipated; accidents, labour disputes and shortages and other risks of the mining industry. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws.

To view Figure 1: Surface Geology - Plan, please visit the following link: http://media3.marketwire.com/docs/ct_fig1.pdf.

To view Figure 2: Longitudinal Section Near Surface Target Zone with New Drilling, please visit the following link: http://media3.marketwire.com/docs/ct_fig2.pdf.

To view Figure 3: Longitudinal Section and 240 Zone Exploration Target Areas, please visit the following link: http://media3.marketwire.com/docs/ct_fig3.pdf.