Montreal police spokesperson Manuel Couture said officers were called at around 7 p.m. on Friday to reports of a woman being stabbed inside an apartment building on Aylwin Street, near the intersection of Sherbrooke Street in the borough of Mercier-Hochelaga-Maisonneuve.
When officers arrived at the scene, they found the woman with injuries to her upper body possibly caused by a sharp object.
Police initially said the victim was rushed to hospital in critical condition where she later died. They clarified on Saturday that she was declared dead at the scene.
While investigators first believed the woman to be in her 20s, her identity was confirmed late Saturday morning. Police have not released her name but said she was in fact 34.
A 32-year-old man was arrested nearby and taken to hospital for evaluation.
Couture said the man is expected to appear in court later in the day on Saturday to face murder charges.
Police have confirmed there was a conflict between the man and the woman but the relationship between the two, if any, has yet to be established.