Gardaí were responding to a call out around 10 o'clock last night.
A man has been arrested and a firearm seized in Carlow Town.
Gardaí made the arrest while responded to an incident shortly after 10 o'clock last night.
The individual is being detained at Carlow Garda Station where he can be held for up to three days.
The firearm has been sent for ballistic examination and the investigation remains ongoing.
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