The Irish Prison Service said it had invested in new technologies and beefed-up security measures at its sites.

The recommendation by the Office of the Inspector of Prisons comes from an investigation into the death of a man in Wheatfield Prison

Officers investigating the smuggling of controlled drugs and contraband into prisons have carried out searches.

The incident involving a lorry and a motorcycle happened shortly after 10am on the northbound carriageway of the M50 between Junction 7 (N4 Liffey Valley) and Junction 6 (N3 Castleknock).