Three people suspected of links to the Real IRA were to appear before a Paris judge today to be told of the case against them, judicial officials said.
The suspects were to be placed under investigation - one step short of formal charges - tomorrow for criminal association with a terrorist group, the officials said .
French state prosecutors were expected to request that two of the suspects be held in custody, with the third released before further proceedings.
The suspects were among six people arrested on Tuesday on suspicion of ties to the Real IRA.
The three other suspects were released without facing any charges.
The six were arrested in the northern coastal regions of Cotes d'Armor and Seine-Maritime. Police also found two submachine guns, an automatic pistol and two silencers hidden in a barrel-sized container in a small forest.
In August, French authorities, working on intelligence provided by the gardaí opened an inquiry into possible activity in France by the Real IRA.
A Dublin man arrested by gardaí as part of an investigation into a "Real IRA" arms smuggling route from France was charged at the Special Criminal Court yesterday with membership of an illegal organisation.
Mr Gary Roche (28), Knockmaree Apartments, Chapelizod, Dublin, was charged with membership of an illegal organisation styling itself the Irish Republican Army, otherwise Oglaigh na hEireann, otherwise the IRA, on November 4th.
The court remanded him in custody until next Tuesday.
A second man arrested as part of Garda investigations into a "Real IRA" arms-smuggling route from France has been released, and a file is being prepared for the DPP.
AP