It followed an ongoing intelligence led operation
Two people have been arrested in Waterford on suspected involvement in terrorism activity.
Gardaí say the arrests were made on Thursday morning it was part of an ongoing intelligence led operation.
It followed an operation by gardaí in Waterford City.
The man and woman were arrested on suspicion of having committed offences under the Criminal Justice Terrorist Offences Act, 2005.
The two people are both aged in their 20s.
They were taken to Waterford garda station and detained under Section 4 of the Criminal Justice Act.