Article contentOntario’s police watchdog has cleared an Ottawa Police Service officer of possible criminal charges over the discharge of a non-lethal anti-riot weapon inside the Montfort Hospital in July.In a report posted Thursday evening, Special Investigations Unit director Joseph Martino wrote that there were “no reasonable grounds to believe that an officer committed a criminal offence in connection with the incident.”Article contentThe incident narrative contained in the online report said officers were dispatched to Montfort’s mental-healthy unit after staff called for police assistance with a violent patient: a 26-year-old man…