48 people have been arrested and Gardaí have carried out 21 searches in the Carlow area over the past three days.
Of those arrested, 24 were detained as part of ongoing investigations into thefts, assaults, fraud, burglary and drugs related matters.
19 were arrested on foot of existing warrants.
Five were arrested with the intent of being charged and will appear before future sittings of Carlow District Court.
12 people have been charged and will appear at local sittings of Carlow and Kilkenny District Courts in the coming weeks.
A total of 42 checkpoints were carried out during the operation, with two vehicles seized under road traffic legislation.
The arrests and searches came as part of Operation Thor - Project Storm in the Kilkenny-Carlow division.
Gardaí say the operation aims to "prevent crime, disrupt criminal activity, apprehend criminals wanted on warrant and enhance public relations".