Three people have been arrested as part of the investigation into the abduction and torture of Kevin Lunney.
Two men and a woman are being questioned following the attack on the Quinn Industrial Holdings director.
Kevin Lunney was found on the side of the road in Cavan after being abducted outside his home in Fermanagh on the 17th of Sept.
The 50-year-old was slashed with a knife, doused with bleach and branded by his attackers.
Yesterday, the Justice Minister insisted that "no stone is being left unturned by both the Gardaí and the PSNI" into the attack.
In one of the most significant developments in the investigation to date, Gardaí have confirmed that three people have been arrested.
The two men and one woman are being detained this morning for questioning.
Last week the chief suspect in the investigation, Cyril McGuiness, died during a police raid in the UK.
The joint investigation between the Gardaí and PSNI continues.
