A 17-year-old girl was sexually assaulted in the area of Main Street and James Avenue last Friday at about 10 p.m.
Police said the girl was groped by an unknown male and, when she demanded that he stop, he threatened to harm her with an undisclosed weapon.
When other people came into the area, the man ran off.
The suspect is described as an aboriginal man of about 40 to 50 years of age, 5-foot-9 with a slim build, short hair and clean shaven.
Anyone with information about this incident or the suspect is asked to contact police at 204-986-6245 or CrimeStoppers at 204-786-TIPS (8477).