A man and woman are still being questioned by Gardaí in Dublin following the discovery of two firearms along with quantities of ammunition.
The arrests were in the Ballymun and Finglas areas as part of an operation targeting drugs related criminal activity.
"Late on Thursday evening a male cyclist in his 40s was stopped by Gardaí in the Shangan Gardens area of Ballymun. A loaded firearm was recovered.
A man was later arrested and is currently being questioned at Ballymun Garda Station.
Meanwhile yesterday during a follow up search of a house in the Finglas area, a machine pistol, two loaded magazines, two silencers and a quantity of ammunition was recovered.
A woman in her 50s was arrested and is also currently being questioned at Ballymun Garda Station."
