A 30-year-old Toronto woman has been arrested and charged with murder in the separate deaths of three people in Toronto, Niagara Falls and Hamilton, according to Toronto police.

A Toronto woman is accused of killing three people over three days – allegedly targeting two of them at random – in three different southern Ontario cities this week, police said Friday, as investigators work to determine if she could be linked to any other cases across the province.

Sabrina Kauldhar, a Toronto woman, has been arrested after a deadly three-day killing spree across Ontario, leaving three victims dead. Authorities are investigating the murders, labeling Kauldhar a potential serial killer due to the violent and random nature of the attacks.

Niagara Regional Police officers arrested 30-year-old Sabrina Kauldhar of Toronto on Thursday at a Burlington Hotel. Kauldhar has been charged with first-degree murder in the Hamilton homicide and second-degree murder in the Toronto and Niagara investigations.

An alleged serial killer has been arrested after what police say was a three-day killing spree. Sabrina Kauldhar, 30, of Toronto, has been charged with second-degree murder in a death in Toronto and a death in Niagara Falls. She is also charged with first-degree murder in relation to a death in Hamilton.

A Toronto woman is accused of killing people in Niagara Falls, Hamilton and Toronto across the first three days of October. Two of the killings, police allege, were random.