MONTREAL, QUEBEC--(Marketwire - June 4, 2008) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to report on its on-going drilling program at the Cusi silver district. Individual assays from the holes are shown in the tables at the end of this release.

The objectives of the on-going drilling program at Cusi are to upgrade the resources in the Santa Edwiges and Promontorio sectors, as well as targeting individual structural corridors identified during the mapping program of 2007.

To support the resource evaluation and to complement the surface drilling program, Dia Bras initiated an underground drilling program similar to the Bolivar ongoing underground program. This program has the objective to follow up mineralized zones exposed at the Santa Edwiges and Promontorio structures from the surface drilling. The results of all the drilling performed until March 31, 2008 at Cusi were included in the resource calculation and can be found on Dia Bras website. Since April 2008, more than 2882 metres of surface (2142m) and underground (740m) drilling have been completed.

One hole drilled before April with spectacular results, hole DC08M23 was not included in the resource estimates of March due to the complex structural pattern.

SANTA EDWIGES - SAN ANTONIO - SAN MARINA SECTOR

The underground drilling has allowed Dia Bras to delineate high-grade ore shoots along the Santa Rosa zone and along the Santa Marina trend.

In this area, high grade silver and gold mineralization is associated with zinc and lead mineralization. The best intersection was observed in hole DC08M023, which intersected 1345 g/t Ag, 14.05 g/t Au, 1.10% Zn, 1.60% Pb and 0.1% Cu, over a core length of 1.0 metre (true width estimated at 0.85 metre). Other high grade intersections include 1235 g/t Ag, 0.34 g/t Au, 1.40% Zn, 9.20% Pb and 0.20% Cu, over 1.0 metre core length (0.75 metre true width); 400 g/t Ag, 1.3 g/t Au and only a trace of sulphides over 1.5 metre core length (1.0 metre estimated true width) in hole DC08M27; and 43 g/t Ag, 4.67 g/t Au, 0.7% Zn, 0.8% Pb and 0.1% Cu over 1.5 m core length (1.1 m true width) in hole DC08M26.

A very rich sulfide zone was also encountered in the same area in hole DC08M25, which intersected 853 g/t Ag, 0.11 g/t Au, 16.6% Zn, 25.4% Pb and 0.2% Cu over a core length of 0.9 metres (true width of 0.75 metre) and in hole DC08M29, which intersected 130 g/t Ag, 0.37 g/t Au, 6.70% Zn, 11.8% Pb and 0.1% Cu over a core length of 3.0 metres (2.73 metres true width).

As previously reported, the Santa Edwiges -- San Antonio -- San Marina sector consists of multiple fracture-filled quartz-carbonate veins containing high sulphide contents that are typical of the middle portion (Pb-Zn) of a zoned, low-sulphidation epithermal vein. This middle portion of the vein transitions upwards to the precious metal (Au, Ag) portion of the vein.

Surface drilling resulted in the Promontorio sector reveals 503 g/t Ag, 0.1 g/t Au, with a trace of sulphide over a core length of 1.5 metres (estimated true width of 0.8 metre).

2008 Drill Program

The following table shows the distribution of drilling for 2008.

------------------------------------------------------------
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Area                            Metres Drilled
------------------------------------------------------------
------------------------------------------------------------
              January February   March   April   May   Total
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Santa Edwiges     422      792     795     497   243
------------------------------------------------------------
Underground       422      792     795     497   243  2753.0
------------------------------------------------------------
Promontorio       920      789     126               1,835.0
Santa Edwiges     601      394       0                 995.0
Santa Marina    176.5    520.5   373.5     495   561 2,126.5
Minerva             0       40     524     603   483 1,653.0
------------------------------------------------------------
Total Surface 1,697.5  1,743.5 10,26.5   1,098 1,044 6,609.5
------------------------------------------------------------
Grand total   2,119.5  2,535.5 1,821.5   1,595 1,287 9,362.5
------------------------------------------------------------
------------------------------------------------------------

Method of analysis

Half split diamond drill core samples sent for analysis were prepared by ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Ag by AA on 50 g split sample at the ALS Chemex Vancouver Laboratory. Assays for Pb, Zn and Cu are done by Induction Coupled Plasma (ICP) at ALS Chemex, Vancouver.

Quality control

The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in Roscoe Postle Associates' 43-101 report of December 2006 on Cusi.

The technical content of this news release has been approved by FranOois Auclair, P. Geo. and Vice-President, Exploration of Dia Bras, a Qualified Person as defined in NI43-101.

About Dia Bras

Dia Bras is a Canadian exploration mining Company focused on precious and base metals in the State of Chihuahua, in northern Mexico. The Company is committed to developing and adding value to its assets -- the Bolivar copper-zinc project and the Cusi silver mining camp. The Company trades on the TSX Venture Exchange, under the symbol "DIB".

Forward-looking statements:

Except for statements of historical fact, all statements in this news release, without limitation, regarding new projects, acquisitions, future plans and objectives are forward-looking statements which involve risks and uncertainties. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from those anticipated in such statements.

Recent underground drilling results from the Santa Edwiges Sector:

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                                           Au     Ag   Cu   Pb   Zn    True
Hole      Zone      From     To  Length  (g/t)  (g/t)  (%)  (%)  (%)  Width
---------------------------------------------------------------------------
DC08M023  Edwiges   12.0   19.5     7.5   0.0     69  0.1  0.6  1.3    6.36
                    85.5   87.0     1.5   1.1    124  0.0  1.7  1.0    1.27
                   120.1  121.1     1.0  14.1   1345  0.1  1.6  1.1    0.85
                   155.4  159.1     3.7   0.4    269  0.2  4.3  4.9     3.1
---------------------------------------------------------------------------
DC08M024  Edwiges   10.5   12.0     1.5   0.1     74  0.1  1.4  3.9     1.3
                    84.0   85.5     1.5   0.4    128  0.0  0.5  0.3     1.3
---------------------------------------------------------------------------
DC08M025  Edwiges   12.0   16.5     4.5   0.1    157  0.1  0.8  1.1     3.5
                    23.7   24.6     0.9   0.1    853  0.2 25.4 16.6      .7
                   131.1  133.1     2.0   1.4     67  0.1  2.2  0.8     1.6
---------------------------------------------------------------------------
DC08M026  Edwiges  121.5  123.0     1.5   0.0     33  0.0  5.6  0.1     1.2
                   130.5  132.0     1.5   4.7     43  0.1  0.8  0.7     1.2
---------------------------------------------------------------------------
DC08M027  Edwiges   30.4   31.4     1.0   0.3   1235  0.2  9.2  1.4      .7
                   175.5  177.0     1.5   1.3    400  0.0  0.0  0.0     1.1
---------------------------------------------------------------------------
DC08M028  Edwiges   76.6   78.0     1.4   0.2     59  0.0  1.1  1.2     1.0
---------------------------------------------------------------------------
DC08M029  Edwiges   51.0   52.5     1.5   0.0     14  0.0  0.1  2.2     1.1
                    74.4   78.0     3.6   0.9    385  0.1  6.1  3.3     2.5
                   123.0  126.0     3.0   0.4    130  0.1 11.8  6.7     2.1
---------------------------------------------------------------------------
DC08M030  Edwiges   75.0   78.5     3.5   0.3    138  0.1  1.8  0.6     1.8
                   132.0  136.4     4.4   0.4    159  0.1  2.1  2.0     3.8
---------------------------------------------------------------------------
DC08M031  Edwiges   28.0   30.0     2.0   0.1    279  0.1  0.2  0.2     1.4
---------------------------------------------------------------------------
DC08M032  Edwiges   75.0   76.5     1.5   0.1     31  0.0  0.9  2.2     1.1
               in
          process
---------------------------------------------------------------------------
DC08M033  Edwiges   10.0   12.0     2.0   0.0     84  0.0  0.1  0.3     1.4
                    27.0   36.0     9.0   0.0     63  0.1  1.1  0.3     6.4
               in
          process
---------------------------------------------------------------------------
DC08M034  Edwiges   25.8   26.5     0.8   0.1    410  0.6 10.7 16.0     0.5
                    66.0   68.0     2.0   0.0     11  0.0  0.4  1.3     1.5
               in
          process
---------------------------------------------------------------------------


Recent drilling results from the Santa Edwiges San Marina Sector

-----------------------------------------------------------------------
                                     Au     Ag     Cu   Pb    Zn   True
 Hole        From     To  Length   (g/t)  (g/t)    (%)  (%)   (%) Width
-----------------------------------------------------------------------
DC08B173    125.0  126.5     1.5    0.1    503    0.0  0.3   0.1    0.8
            197.0  198.5     1.5    0.1     83    0.0  0.2   0.7    0.8
-----------------------------------------------------------------------
DC08B174     no mineralisation
-----------------------------------------------------------------------
DC08B175    273.7  275.0     1.3    0.1     12    0.1  0.9   0.9    0.7
            290.0  291.5     1.5    0.1      3    0.0  0.7   0.9    1.1
            372.8  373.9     1.1    0.0     11    0.0  2.2   1.9    0.8
-----------------------------------------------------------------------
DC08B176     no mineralisation
-----------------------------------------------------------------------
DC08B177     no mineralisation
-----------------------------------------------------------------------
DC08B178    323.2  325.5     2.3    0.1     19    0.1  1.5   0.8    1.2
            330.5  331.5     1.0    1.6     69    0.1  0.7   0.6    0.5
            353.5  354.5     1.0    0.2      4    0.0  0.8   1.6    0.5
            373.0  374.0     1.0    0.0      2    0.0  0.3   2.1    0.5
            407.0  408.0     1.0    0.1     20    0.0  2.7   0.9    0.5
-----------------------------------------------------------------------

FOR FURTHER INFORMATION PLEASE CONTACT:

Dia Bras Exploration
Daniel Tellechea
President & CEO
514-393-8875 ext. 241

Dia Bras Exploration
Francois Auclair
Vice-President, Exploration
514-393-8875 ext. 243

www.diabras.com