A handgun and ammunition have been seized by Gardai in Limerick City.
They were recovered at around midday today when a house in the Ballykeefe area was searched.
A small quantity of suspected cannabis herb was also seized.
A man in his 20s was arrested at the scene.
He is now being questioned at Henry Street Garda Station.
In an unrelated incident, the Criminal Assets Bureau searched 3 homes and a business throughout Co. Limerick today as part of an operation targeting a group involved in the sale of illegal drugs in Limerick city.
Around 3 grand worth of cash was seized, 12 designer watches, while 58 thousand euro across a number of Irish bank accounts was frozen.