A collision involving a city bus in Calgary on Thursday resulted in three fatalities and sixteen injuries, officials have reported. The incident occurred in Calgary, though specific details regarding the cause of the crash have not yet been released. Emergency services responded to the scene and transported the injured to local hospitals for treatment. The extent of their injuries varies, but some are considered serious. An investigation is underway to determine the factors that led to this devastating incident in Calgary. Authorities are asking anyone with information about the crash to come forward and assist with the investigation.