260213.jpg)
As of February 21, 34 of the 85 inmates at Jurby prison were in custody for drug-related offences, and two for alcohol-associated crimes.
Home Affairs Minister Juan Watterson has revealed the figures in the House of Keys, in reply to fellow Rushen MHK Lawrence Skelly.
Meanwhile, in answering a supplementary, Mr Watterson admitted substances did find their way into the prison, but said measures were in place to tackle the problem.
He said one issue was with prisoners making their own alcohol, which could be done in any enclosed space:
Senior doctors and consultants call for intervention amid 'critical shortfall in bed capacity' at Noble's Hospital
Rolling delays see Manxman sailings cancelled
Ban for Norfolk electrician caught drug driving
Assisted dying bill receiving 'due attention it deserves' in UK