Officers got a call Thursday night from a man saying that he had killed a woman and was driving the body across Calgary.
Twenty minutes later, police got another call from a woman saying she'd been assaulted by the same man.
A third call was from a member of the public reporting a man trying to hang himself from a bridge.
Police found the man hanging and rescued him, then they found the vehicle containing the body of a woman in her early 20s.
The man is in hospital.
Police say the death was likely a domestic incident and not a random act.