Calgary police continue to investigate a Thursday collision involving two city buses and several other vehicles, resulting in a devastating fire and explosion. The incident, which occurred in Calgary, tragically claimed the lives of three individuals and injured sixteen others. Authorities have released few details as the investigation is ongoing, focusing on determining the cause of the crash and subsequent blaze. The severity of the fire complicated initial rescue efforts and continues to hinder the investigative process. Calgary emergency services responded to the scene and provided aid to the injured, who were transported to local hospitals. Police are appealing for witnesses to come forward with any information regarding the incident in Calgary.