The woman’s victims, found in a span of three days in Canada last week, included two men whom the police said she had attacked at random.

Toronto, one of the safest cities in North America, has become the scene of dramatic events. Sabrina Kauldhar, a 30-year-old Canadian who was once an exemplary student and talented athlete, is now in custody as a suspect in a series of brutal murders.

Canadian police say they've captured a serial killer who is accused of three murders over a three-day span last week. Sabrina Kauldhar, 30, was arrested Friday. The first victim, a 60-year-old woman,