The Celtic League claims the Manx Government is breaching United Nations guidelines on the treatment of prisoners by housing adult and juvenile offenders together in prison.
Director of Information Bernard Moffatt says overcrowding at Victoria Road (pictured) has forced the move.
In the past, men and women have been forced to share wings because of an accommodation crisis.
Mr Moffatt says that was bad enough, but the present situation is even worse:
Government engaging with UK over international ferry levy plans
Isle of Man won't be affected by July 2026 changes to domestic voyages
Forecasters warn of snow over higher ground later
Higher routes such as Mountain Road could be affected by slight accumulations
Dementia demand assessment underway as Public Health forecasting future need
Figures suggest Island prevalence of 0.7 percent, as government acknowledges demand likely to rise due to aging population
A Day in the Life of: Hannah Phillips
We spend the day with the Manx Wildlife Trust's Community Ranger