Gardai seized an Uzi machine gun and ammunition after a raid in Ballyfermot on Monday morning.
Officers from the Detective Unit attached to Ballyfermot Garda Station carried out the search and also found two magazines and a silencer.
No arrests have yet been made and gardai said investigations are ongoing. The seized items will now be sent to the Garda Technical Bureau for further examination
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Superintendent Anthony Twomey of Clondalkin Garda Station said that the seizure is "another example of the excellent work being carried out by members of An Garda Síochána in the Ballyfermot area who are committed to keeping the people of Ireland safe."
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