A man and a woman have been arrested in Waterford City on suspicion of being involved in Islamic-related terrorist activity.

The pair, both in their 20s, was arrested this morning as part of an ongoing intelligence operation by gardaí in the city.

The man is from Ireland and the woman is from the UK.

They were arrested on suspicion of having committed offences under the Criminal Justice Terrorist Offences Act, 2005.

Two arrested in Waterford in connection with Islamic-related terrorist activity pic.twitter.com/4JSrYkdQFT — RTÉ News (@rtenews) April 27, 2017

It is understood they are being held on suspicion of facilitating the transfer of money and information in relation to alleged international terrorist activity.

The arrests follow an 18 month operation led by local and national Garda units, with input from counter-terrorism agencies in the UK.

Both are being held at Waterford Garda Station and must be charged or released within 24 hours..