Four people remain in Garda custody this morning.
It's after two loaded firearms were seized yesterday on the back of an operation targetting serious criminal activity in the Dublin area.
Three men and a woman were arrested yesterday after two two cars were stopped and searched in Clondalkin.
Gardaí found two loaded revolvers on Monastery Gate Avenue.
A ballistic examination will be carried out on the guns.
The quartet, all in their 20s are being held at Clondalkin Garda Station.
Gardaí believe they foiled an attempt at a shooting incident in the capital in the ongoing Hutch/Kinahan feud.