Homes were also searched in Naas.
Two men remain in Garda custody after cocaine worth 8.4 million euro was seized in County Westmeath.
It was found after two vehicles were stopped and searched near Lough Owel.
It's believed the drugs were flown into County Longford before being seized.
Homes were searched in Naas, and in Waterford city, while a light aircraft was seized at a commercial airfield in Longford.

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