As many as five people have been injured in a stabbing rampage at an office park in the Canadian city of Toronto, police say.
Toronto police Constable Jenniferjit Sidhu said "a person armed with scissors or a knife" busted into a fifth floor office in a building in the city's north end.
"Two to five people in the office were injured," she said.
One victim was rushed to hospital with serious injuries.
A suspect - a man in his 30s - has been arrested, she said, adding that a heavily armed emergency response unit has secured the building.
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The incident comes the same morning an American student stabbed or slashed 20 teenagers and an adult in the classrooms and hallways of a high school in the US state of Pennsylvania.
