According to the Correctional Service of Canada, Atlantic Canada has the highest rate of solitary confinement for federal inmates; at five per cent.
The United Nations Standard Minimum Rules for the Treatment of Prisoners prohibits prolonged solitary confinement, which is anything over two weeks; longer than that is considered torture.
Canada helped draft those rules.
As of last month, 404 prisoners were in solitary, and 22 had been there for more than 100 days.