A male employee is in police custody following a stabbing that left four of his co-workers injured in uptown Toronto, police said.
Toronto police said that a man and woman, both in their 30s, were taken to hospital with life-threatening injuries. They are in critical condition. Two other men, aged between 35 and 45, were taken to a trauma centre with minor injuries.
The man in custody is approximately 45 years old, and worked at an office on the fifth floor of the building, Det. Dan Darnbrough told the media on scene.
The victims were all on the fifth floor of the building, and were stabbed with a sharp object, Darnbrough said. Initially, police said the object was a pair of scissors, but Darnbrough said they now believe it was a knife.
The suspect was seen with apparently blood-stained hands as police escorted him from the building, but he was not injured.
The fifth floor has been locked down since the stabbing was reported at 9:30 a.m., as police investigate.
Ambulances were called and several police cars could be seen outside of an office building on 4110 Yonge Street near York Mills Avenue.
Police have closed Yonge Street southbound at Highway 401 as they investigate.