Police in the North are today questioning ten people arrested yesterday during an operation against dissident republicans.
The PSNI said it had disrupted a "major terrorist conspiracy" to procure arms after arresting the ten during raids in counties Armagh and Fermanagh yesterday morning.
Eight premises were searched during the raids, which involved some 200 police officers supported by the British army.
One of those arrested is being questioned about the 1998 Omagh bomb attack.
Police said the operation targeted dissident republican activity in both the United Kingdom and Europe. The operation followed a joint investigation between the PSNI's Crime Operations Department and the British security service.
Police confirmed part of the operation was aimed at disrupting a conspiracy to procure a significant quantity of arms.
Detectives from the Crime Operations branch travelled to France and were present during related searches carried out by French police. The inquiries in Europe are continuing.