Officers responded just before 11 a.m. to the area of Main and Queen streets.
Police said the three victims were found with stab wounds in front of a business.
According to investigators, a woman was rushed to a trauma centre in life-threatening condition, while a man was transported to a trauma centre with serious but non-life-threatening injuries and a second man was rush to a local hospital in serious condition.
There’s currently no information on the relationship between the victims and suspect, police said.
The investigation is ongoing.
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