Restaurant Waterloo, ON, Canada – Suspicious early morning fire at restaurant controlled by sprinkler system November 28, 2017 viking210 The Ontario Fire Marshall has deemed a fire in a Waterloo restaurant suspicious. Firefighters were called to a restaurant on King Street North, south of University Avenue just before dawn Friday morning. Fire officials say a sprinkler was able to mostly keep the fire under control before firefighters arrived at the scene. No injuries were reported.