A report by watchdog has warned that legal highs within prisons are damaging the local ambulance service.
The Chief Inspector of prisons, Nick Hardwick stated that the abuse of legal highs has turned into a top security problem within the prisons. Prisoners are having fits and blackouts as a result of taking legal highs and this has "depleted" local ambulance services.
During one incident at HMP Wealstun, West Yorkshire, a number of inmates needed treatment which led to all available ambulances being sent there.
Legal highs have been smuggled in to the prisons inside a carriers body, catapulted over prison walls and attached to package-carrying drone.
Further information about legal highs can be found under the Tackling Crime – Novel Psychoactive Substances tab at the top of the page.