MONTREAL: The 100,000 residents of the Canadian city of Fort McMurray were ordered to leave town late Tuesday as a monster wildfire swept through the oil sands region, in Alberta province’s largest ever evacuation. No casualties have yet been reported but gas stations exploded and a hotel and one of the town’s many motor home parks went up in flames, according to local media. The air was thick with black smoke. “I know that it’s a very scary time,” Alberta premier Rachel Notley told a press conference. “Our focus is completely and entirely right now on ensuring the safety of people, of getting them out of the city and ensuring that they are safe and secure.” Authorities urged residents to head toward evacuation centers as the city reeled from what Notley called the province’s largest evacuation.