A man in his 20s is being held at Longford Garda Station as part of a national investigation into alleged dissident republican activities. The suspect, who is believed to be from County Longford, is the ninth person to be arrested as part of this investigation.
Eight other men were arrested earlier this week following searches in counties Longford, Clare, Waterford and Wexford. All nine men remain in custody.
The suspects are being held on suspicion of membership of an unlawful organisation and unlawful possession of explosives and firearms.