Yesterday afternoon, at around 3:30 p.m., a collision occurred on highway 440. Unfortunately, the accident has left 4 dead and 11 injured, a few of whom are still in critical condition.\nAccording to the CBC, the cause of the accident was a collision between a small car and a semi-trailer truck. The two vehicles then collided into a second semi-trailer.\nOne of the trucks was carrying propane, which led to an uncontrollable blaze on the highway. Vehicles behind the accident were unable to avoid the vehicles, leading to a pile-up on the highway.\nWarning: the media below contains graphic images that some may find upsetting. We advise readers to use their discretion.\nEmergency personel quickly arrived on scene to assist victims and control the fire, which could be seen from kilometers away.\nSelon pompiers de Laval, les trois victimes de l’accident sur la 440 sont mortes brûlées à l’intérieur de leur véhicule. Ambulanciers parlent de scènes « atroces ».— Felix Seguin (@felixseguin) August 5, 2019\nTranslation: According to Laval firemen, three victims of the accident on the 440 were found burnt inside their vehicles. Paramedics describe "atrocious" scenes.\nDrame sur l'A440 ouest à Laval: Au moins six véhicules - dont deux poids lourds - impliqués dans une violente collision. Les deux poids lourds ont pris feu à la suite de l'impact. Trois personnes entre la vie et la mort. A440 ouest complètement fermée hauteur du boul. Industriel. pic.twitter.com/mJ38jRSjb2— Maxime Deland (@MaxDelandQMI) August 5, 2019\nAccording to witnesses, the collision caused "explosion-like" sounds.\nREAD ALSO: There Are Hundreds Of Attempted Cyber Attacks On Hydro Québec Every Year\nThe highway remained closed for over twelve hours while investigators conducted a preliminary evaluation. The highway officially re-opened at about 5:00 AM Tuesday morning.\nMany of the cars are highly damaged, to the point that even serial numbers are difficult to identify. Victims have also not yet been identified.\nWitnesses interviewed by La Presse deplore this stretch of highway, which is known to be very dangerous and the site of many accidents.\nSécurité Québec have already interviewed many witnesses, but they are asking for the public's help in piecing together the sequence of events.\nPeople who witnessed the crash, and the moments preceding it, are asked to contact the Sécurité Québec at 1-800-659-4262.