Calgary

However, scientists from the University of Bath and the University of Calgary in Canada, have set out to prove that cleaners - and similar devices, such as lawnmowers - could be reprogrammed and modified relatively easily.

The attack came just before Canada's federal election on 28 April, prompting Prime Minister Mark Carney to cancel large gatherings of Liberal Party supporters in Calgary and Richmond.

At his ranch outside of Calgary in the foothills of the Rocky Mountains, Mr Rath has a different view.

The Kings were playing for history Thursday and the Calgary Flames were playing for pride.

Sutter said the man was 38 years old and provided police with a Calgary address.