Nine people face extradition to the UK and Poland after a major Garda operation.
Two men, in their 30s and 50s, are wanted in Poland to face fraud, false imprisonment and drugs offences.
Two women and five men, meanwhile, face extradition to the UK to face various charges.
They include a 63-year-old man in Longford, who is wanted in connection with sexual offences.
All nine were detained by gardaí this week on foot of European Arrest Warrants.
Detective Superintendent Michael J Mullen of the Garda Extradition said: "The significant arrests over the last two days, coordinated by detectives attached to Organised and Serious Crime, supported by local members across the country, represents our ongoing commitment to ensuring persons wanted on international arrest warrants are brought to justice."
They have appeared before the High Court, where they will appear again in January.