Osisko Exploration Ltd. (TSX VENTURE:OSK)(FRANKFURT:EWX) is pleased to announce
new results from the 30m x 30m infill drilling program at its 100%-owned
Canadian Malartic gold property. Highlights from holes CM07-999 through to
CM07-1100 are summarized below and include intersections that were either longer
or better grade than expected, as well as new mineralized intersections in areas
where barren rock was anticipated.  All other results from the infill program,
including sterilization holes immediately outside the deposit, are in line with
expectations and continue to confirm the integrity of the geological and grade
model for the deposit.


Intercepts that produced better-than-anticipated results include 158.1 m
averaging 2.29 g/t Au (CM07-999), 47.8 m averaging 3.04 g/t Au (CM07-1055) and
277.0 m averaging 1.22 g/t Au (CM07-1091). Details from nine selected holes are
tabled below:




Hole No.    Section    From(m)     To(m)  Length(m)    Au g/t
CM07-999      3580E       1.7     159.8      158.1       2.29
including                53.5      64.0       10.5      13.31
CM07-1041     3444E      16.5      35.4       18.9       4.94
CM07-1055     3642E      18.2      66.0       47.8       3.04
including                31.0      49.5       18.5       5.53
And                     130.5     235.0      104.5       1.20
CM07-1056     3730E     182.0     211.4       29.4       3.58
CM07-1060     3702E     128.1     256.5      128.4       1.29
CM07-1065     3580E      58.5     218.5      160.0       1.95
including                83.5     106.0       22.5       8.06
And                     242.0     302.4       60.4       0.70
CM07-1068     3674E      28.5      47.0       18.5       1.60
And                     109.5     206.5       97.0       1.73
including               184.0     194.5       10.5      12.46
CM07-1073     3642E       5.5      59.0       53.5       2.26
including                11.5      15.8        4.3      17.10
And                      83.5     164.0       80.5       2.45
including               127.0     130.0        3.0      25.46
CM07-1091     3502E       2.5     279.5      277.0       1.22



New drill intercepts from areas that were not known to contain mineralization
include 36.2 m averaging 3.14 g/t Au (CM07-1019) and 48.5 m averaging 3.01 g/t
Au (CM07-1094). Details from the seven holes that intersected new mineralization
are tabled below:




------------------------------------------------------------
Hole No.    Section   From(m)     To(m)   Length(m)   Au g/t
CM07-1019     3380E     89.0     125.2        36.2      3.14
CM07-1034     3350E      8.5      26.5        18.0      2.57
And                     54.5      72.5        18.0      2.81
And                     87.5     134.0        46.5      1.08
CM07-1046     3230E     46.0      65.5        19.5      0.90
And                     96.7     121.0        24.3      2.24
CM07-1094     4215E    201.0     249.5        48.5      3.01
including              230.0     233.0         3.0     38.80
CM07-1096     4215E     95.5     113.5        18.0      2.72
CM07-1097     4215E     72.5     125.0        52.5      0.79
CM07-1100     4277E     47.0     101.0        54.0      1.27
------------------------------------------------------------



Drill holes CM07-1019 and -1034 are located west of the P zone and data now
suggest that this zone plunges to the southwest. Drill hole CM07-1046 is a
western extension of the F zone mineralization. Drill hole CM07 -1094 represents
a depth extension to known mineralization, whereas drill holes CM07-1096, -1097
and -1100 represent new mineralized extensions in the area of the Gilbert zone.


Following a review of the 30 x 30 metre infill drill program, the Company has
elected to increase the current program from 150,000 metres to a total of
185,000 metres. The infill program is designed to collect data for a Measured
and Indicated ("M&I") resource estimate on the main portion of the deposit
between lines 3140E and 4580E. This represents a distance of 1440 metres, which
is 77% of the known 1860 metre length of the deposit. The infill program has
been increased in order to better define the higher grade envelope (greater than
1 g/t Au) in the core of the deposit, increase accuracy of the underground stope
model and include the extension of the deposit between the Gilbert zone and
section 4580E. As a result of the increased infill program, Osisko now plans to
release the M&I resource estimate in Q2 2008.


The Canadian Malartic gold deposit is still open to the southeast between lines
4400E and 4760E. Osisko is currently drill testing the southeastern extension to
the Gouldie zone, located 700 metres southeast of the deposit. Eleven drill rigs
are currently active on the property, and an additional four rigs will be added
to the program by mid-October.


All NQ core assays were conducted using standard 50 g fire assaying-AA finish at
ALS Chemex laboratories in Val d'Or, Quebec. Reported weighted averages were
calculated using a minimum of 0.40 g/t Au over successive maximum intervals of
20 metres with no upper cut-off of individual assays.


Osisko Exploration Ltd. is currently evaluating the Canadian Malartic gold
deposit and adjacent areas for a large-scale open pit, bulk-tonnage mining
operation. The Company is well-funded with approximately $80 million on hand and
is carrying out an aggressive definition drilling and exploration campaign on
the Canadian Malartic deposit and surrounding property. An updated NI 43-101
complaint, inferred gold resource estimate on the main deposit was released on
July 5, 2007 and the full report is available on SEDAR.


Mr. Robert Wares, P. Geo. and Executive Vice-President of Osisko, is the
Qualified Person responsible for the technical information reported in this news
release.
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