Saskatoon police say they are investigating a fire that ripped through a high school in the city’s west end last week and are calling it “suspicious.” Police say they received multiple calls about the fire at Bethleham Catholic High School Friday evening at around 10:30 p.m., and responded alongside the fire department.Videos posted to social media show a large glowing blaze with smoke billowing several feet above the flames.On Monday, the hollowed-out portable classroom structures are blackened and filled with debris on the eastern portion of the school.Caution tape lines the outside of the school, from the front entrances to…