Dundalk courthouse was evacuated following reports of a bomb in the building.
Gardaí said they are currently at the scene of an incident on Magnet Street in Dundalk, Co Louth.
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In a statement, gardaí have now said the alert is deemed to be a hoax.
"Gardaí were made aware of a security alert at a premises at Crowe Street, Dundalk, Co Louth, earlier this morning, Tuesday, 14th January 2025.
"Following further enquiries, An Garda Síochána is satisfied that the alert has been deemed to be a hoax and the area was declared safe."
Gardaí say investigations are ongoing.