GardaI have seized a handgun and ammunition, as well as a consignment of cocaine, during a search of a house in Dublin.
The planned operation based on intelligence gathering was carried out at 6.30pm yesterday evening in Poppintree, Dublin 11.
During the search, gardai recovered a 9mm pistol with eight rounds of ammunition and a quantity of cocaine with a street value of €21,000.
A 30-year-old man, who is said to be known to gardai but not a major player in the Dublin crime scene, was arrested at house.
He was then taken to Ballymun Garda Station where he is detained under Section 30 of The Offences Against The State Act and can be held for up to 72 hours.
Garda sources said they are expecting further arrests to take place arising from the operation.
The house remained sealed off today as members of the Garda Technical Bureau carried out a forensic examination at the scene.
Separately, gardai from the Terenure District Drug Unit who stopped a car on Leinster Road, Rathmines, on Friday evening found a quantity of cannabis herb and LSD.
In a follow-up search of a house in the Rathfarnham area, further quantities of cannabis herb and LSD, along with cocaine, were found.
The total street value of the drugs seized in that operation was estimated to be in the region of €60,000. Two men in their 20s were arrested at the scene and held at Rathmines Garda Station.
The seizures come following a successful raid by gardai investigating criminal activity in the city.
Last week, a house in the Kilclare area of Tallaght was raided and officers seized three rifles, a revolver, two sawn-off shotguns, and a large amount of ammunition.
A technical examination of the scene was carried out and the arms seized were removed for further examination.
The latest operations see the continued success of an intelligence-led drive to step up the war on drugs.
Gardai, backed up by local drug units of the force, say the operations are targeting drug distribution chains at all levels.