Two planes collided on the ground at Toronto's Pearson International Airport on Friday evening, but no serious injuries are reported.
WestJet says one of its flights, inbound from Cancun, Mexico, with 168 passengers and a crew of six, was stationary and waiting to go to a gate when it was struck by a Sunwing aircraft moving back from a gate.
Spokeswoman Lauren Stewart says the WestJet passengers were evacuated from the aircraft via emergency slides and says all passengers were safely in the terminal and clearing customs shortly after the collision.
Sunwing says there were no crew or passengers aboard its aircraft, which was being towed by the airline's ground handling service provider, at the time of the incident.
Witnesses tweeted that flames could be seen coming from the tail of the Sunwing jet and posted pictures of firefighters around the tail section of the damaged plane.
WestJet says it has been in contact with the Transportation Safety Board, the Greater Toronto Airports Authority and other agencies responsible for responding to, and investigating, the incident.