Prime Minister David Cameron told MPs the Government will not stand for extremists or "groups like the English Defence League who try to demonise Islam and try and stoke up anti-Muslim hatred".
Mr Cameron said in a statement to the House of Commons, "It is as if for some young people there is a conveyor belt to radicalisation that has poisoned their minds".
More top news
Authorities announced that 29-year-old Travis Reinking was taken into custody on Monday.
Police say a van in Toronto has struck at least 8 people, but the cause of the incident and the extent of injuries are not yet known.
Matt Campbell was a semi-finalist in MasterChef: The Professionals in 2017.