In February 2014, an investigation was launched by the Office of the Correctional Investigator of Canada, due to complaints regarding the treatment of mentally ill inmates. These inmates had been transferred to Millhaven after the closure of RTC (Regional Treatment Centre) at Kingston Penitentiary. Photos released to the public show questionable facilities and cleanliness in that unit. Some mentally ill inmates had symptoms worsen upon arriving at Millhaven. There was also concern by the John Howard Society of Canada that the underground "bunker-like" location was a very negative atmosphere for these inmates.