Gardaí are continuing to question three men who were arrested in Limerick yesterday in relation to Continuity IRA activities.
Two men who were detained during the raid on a hotel yesterday were released around midday today and another was released last night.
No charges are to be brought against the three who have been released, a garda spokesman said.
Three men from Dublin and another three from the Limerick area were arrested by the Garda Síochana, as they held a meeting in a Limerick city hotel.
They were all detained under section 30 of the Offences Against the State Act in Henry Street and Mayorstone Garda stations in Limerick.
The three men who are still in custody can be held until Tuesday morning before being charged, released or having their periods of detention extended.
PA