A driver slams into a Muslim family, killing four people, in what Canadian PM calls 'a terrorist attack'

Police officers search for evidence at the scene of the attack in London, Ontario, on Monday, June 7.

(CNN)Canadian Prime Minister Justin Trudeau on Tuesday called the killing of four members of a Muslim family mowed down by a pickup truck "a terrorist attack."

"Their lives were taken in a brutal, cowardly, and brazen act of violence," the Prime Minister said before the House of Commons. "This killing was no accident.