Four men have been arrested today as part of the investigation into the torture and abduction of Kevin Lunney.
Kevin Lunney was found on the side of the road in Cavan after being abducted outside his home in Fermanagh on the 17th of September.
The Quinn Industrial Holdings Director suffered life-changing injuries after he was tortured by his attackers.
This morning two men both aged 38 were arrested in the East Wall area of Dublin in connection with the investigation.
They are being held in Ballymun and Finglas Garda stations.
Since then, two more men have been arrested.
In Cavan, a 66 year old man has been detained for questioning, while a 25-year-old was also arrested in Dublin.
Last week a woman and two men were arrested as part of the investigation, they were released without charge and a file was sent to the DPP