MONTREAL—Federal Transport Minister Omar Alghabra has asked Transport Canada to investigate reports of “unacceptable” behaviour on a recent Sunwing Airlines flight from Montreal to Cancun, Mexico. Videos of the Dec. 30 flight shared on social media appear to show passengers not wearing masks as they gather in close proximity, singing and dancing in the aisle and on seats. In one video, a large bottle of vodka appears to be passed among passengers, and later a woman appears to be smoking an electronic cigarette on the plane. According to reports, the plane had been chartered and some of the passengers were cast members from Quebec reality television shows. “I have asked Transport Canada to investigate the matter,” Alghabra wrote in a post on Twitter. “We must take the risks of COVID seriously!” Later Tuesday, Alghabra, Health Minister Jean-Yves Duclos and Public Safety Minister Marco Mendicino issued a joint statement which said …