The three people held for questioning following today's cross-border search operation have been released without charge.
Files are to be sent to the Director of Public Prosecutions.
An estimated €200,000, as well as fuel and 30,000 cigarettes were seized in the raids along the border in a joint Garda/PSNI operation directed against organised crime.
Two shotguns, computers and boxes of documents were also taken away for examination during the raids in north Co Louth and south Co Armagh.
Up to 400 gardaí, PSNI, customs officers and military personnel from Northern Ireland and the Republic were involved in the search.
About a dozen properties have been searched in what is described as one of the biggest ever cross-border raids.
At one stage, an area around the family home of Thomas 'Slab' Murphy, allegedly a former IRA chief of staff, was sealed off.