Police in Sault Ste. Marie say a man who killed four people –  including three children – before taking his own life had been involved in police investigations in the past.  Police Chief Hugh Stevenson says the shootings that took place in the northern Ontario city Monday night were the result of intimate partner violence and investigators also got a call on Sunday about what "could be perceived as domestic violence" at one of the two homes where the bodies of the victims were found. (Oct. 25, 2023)