On Monday May 1, Durham Regional Police requested any witnesses to come forward in this case. They say the man is still in hospital in Toronto fighting for his life.
Police in Oshawa are asking the public to weigh in with information after they found a middle-aged man badly injured Wednesday.
Officers say the man was found unconscious in a hallway of an building between Simcoe and Quebec Streets in critical condition after having been attacked.
He was taken to a Toronto-area trauma centre with life-threatening injuries.