Keeping the peace inside Ireland's prison system has never been easy - but the fall of the Kinahan cartel has made life behind bars more dangerous than ever.

According to prison officials, there are currently a total of 166 inmates from 14 separate criminal mobs jailed in prisons across the country. 

However, prison insiders claim that the lines between the different gangs have become so blurred, with the influence of the Kinahan cartel so all pervasive, that the traditional divides can no longer be said to apply.

Five prisons, in particular, house the majority of the country’s most notorious gangland criminals.

These are: Mountjoy, Portlaoise, Wheatfield, Castlerea and Limerick.

Today, I’m joined by Sunday World Deputy Editor Niall Donald to look at how the Prison Service are keeping Ireland's most notorious gangsters under control while behind bars.

Crime World, with Nicola Tallant, is a weekly Iri…