The Defence Forces, garda units and the Irish Coast Guard are involved in a major operation in Wexford.
It is understood that a boat has been damaged after running aground.
It is also understood that a garda drug unit is involved in the operation and two people are assisting investigators with their enquiries.
On Monday evening, a spokeswoman said gardai were engaged in a “live operation”.
The Defence Forces described its response as ongoing.
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