* The Toronto Stock Exchange's TSX falls 0.77 percent to 18,669.80
* Leading the index were George Weston Ltd
* Lagging shares were Westport Fuel Systems Inc, down 10.1%, Hudbay Minerals Inc, down 8.4%, and MEG Energy Corp, lower by 8.1%.
* On the TSX 51 issues rose and 173 fell as a 0.3-to-1 ratio favored decliners. There were 7 new highs and no new lows, with total volume of 252.2 million shares.
* The most heavily traded shares by volume were Suncor Energy Inc, Canadian Natural Resources Ltd and Toronto-dominion Bank.
* The TSX's energy group fell 4.64 points, or 4.0%, while the financials sector slipped 1.93 points, or 0.6%.
* West Texas Intermediate crude futures fell 6.76%, or $4.16, to $57.4 a barrel. Brent crude fell 6.59%, or $4.26, to $60.36 [O/R]
* The TSX is up 7.1% for the year.