A fire broke out on a Moroccan airliner that had just landed in Montreal on Monday evening, forcing an emergency evacuation and causing a number of injuries, authorities said.

The fire broke out on the Royal Air Maroc plane while the crew was unloading the Boeing 767 after it had arrived from Casablanca, said Montreal Trudeau Airport spokesperson Stephanie Lepage.

A conveyor belt overheated and ignited after the bags were pulled from the cargo hold shortly after arrival at 5 p.m., she said.

Some of the 250 passengers and eight crew members were treated for smoke inhalation while others were injured as they jumped from the emergency slides used to evacuate the plane, authorities said.

Montreal Trudeau Airport spokesperson Franois Asselin told the Associated Press that the evacuation was "more of a precautionary measure."

Two of the passengers were treated for injuries on the scene while five others were taken to the hospital in varying conditions, officials said.

The Transportation Safety Board of Canada will investigate the incident, authorities said, noting it was unclear whether the plane was damaged or how many bags were damaged or destroyed.

Fire burns on a baggage belt on the tarmac next to a Royal Air Maroc plane at Trudeau International Airport in Montreal, Nov. 4, 2013. (Olivier Lebrun/AP Photo/The Canadian Press)