Toronto’s Centre for Addiction and Mental Health is launching an internal review and increasing security after a patient managed to leave the country. Zhebin Cong, who was found not criminally responsible for the death of his roommate, was on an unaccompanied visit on July 3 when he failed to return. Criminal defence lawyer Ari Goldkind says he finds the whole case troubling questioning how the man secured a passport and pass through customs. CAM-H is now re-assesing all existing passes and privileges for patients and increasing staffing levels on its forensic units. Toronto police are working with international law enforcement agencies to track down 47-year-old Cong.