SIRIOS RESOURCES INC. TSX VENTURE: SOI

MONTREAL, QUEBEC, CANADA--(Marketwire - Aug. 20, 2008) - SIRIOS RESOURCES INC. (TSX VENTURE:SOI) begins today the diamond drilling program on its molybdenum-copper-gold property TILLY in James Bay, Quebec. The program totaling a minimum 1,500 metres, will allow the testing of at least 12 targets. These originate from the spectrometric, magnetometric and induced polarization ground surveys as well as the geological studies completed this summer.

Most of the geophysical anomalies that will be drilled extend over a length that varies from a couple hundred meters to more than one kilometre. They are interpreted as being caused by metallic mineralizations close to the surface (sub-outcropping). Numerous molybdenum or copper-silver-gold showings (ref.: 02/05/1008 and 11/19/2007 Press Releases) coincide with them.

Between 1997 and 2001, SIRIOS realized, on its TILLY property, the first significant molybdenum discovery in the James Bay area in Quebec, while discovering at the same time an important porphyry complex. The fully-owned property is located 30 km west of the LG-4 hydroelectric complex. It comprises 95 claims for a total area of 48 km2.

This press release was prepared by Dominique Doucet, P. Eng., President of SIRIOS, Qualified Person.

The TSX Venture has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.