The three people arrested in relation to the ongoing investigation into the abduction of Kevin Lunney have been released without charge in the early hours of this morning.
One man in his 20s, another in his 40s and a woman in her 50s were arrested on Thursday as part of the investigation into the kidnapping and torture of Quinn Industrial Holdings director.
Searches were carried out in Cavan, Longford and Dublin.
Mr Lunney was attacked on 17 September as he made his way home from work.
The 50-year-old father-of-six was found bleeding on a remote roadside in Co Cavan after being abducted outside his home in Derrylin, Co Fermanagh.
Mr Lunney told BBC Spotlight earlier this month that he was slashed with a knife, doused with bleach and branded by his captors.
He sustained serious injuries in the attack, including a broken leg and had the letters 'QIH' cut into his chest.
Last week the chief suspect in the investigation, Cyril McGuiness, died during a police raid in the UK.
