Gardaí carried out a number of arrests in the Killarney area in relation to an assault and public order incident which occurred in Co Kerry in the early hours of Christmas Eve.
A number of items believed to be weapons were seized during these searches, including baseball bats, slash hooks and pitchforks.
Two of the persons arrested, a man and a woman both aged in their 40s are being detained in Killarney Garda Station while two other arrested males, aged in their 20s are being detained in Tralee Garda Station. All are being held under Section 4 of the Criminal Justice Act 1984.
All four persons have been charged and are scheduled to appear before Mallow District Court on Tuesday morning.