Ontario police are calling her a serial killer. What we know so far [Video]

Police in Ontario are continuing to investigate what exactly led to a series of slayings involving a woman they are calling an alleged “serial killer.”

Over a span of three days last week, three people were killed allegedly by the same suspect in three different incidents in Hamilton, Niagara Falls and Toronto.

On Friday, three Ontario police forces announced they had charged a 30-year-old Toronto woman with murder. Niagara Regional Police Chief Bill Fordy told reporters Oct. 4 that by “by definition, she is a serial killer.”

The investigation is ongoing, and police are seeking the public’s help in putting together the pieces to get a better understanding of what happened over those three days.

Here is what we know so far.

The streak of slayings began on Oct. 1 in Canada’s largest city.

Just after 2 p.m. that day, Toronto police said they responded to a call for service at a home near Keele and Dundas streets. When they arrived …