PATRICK Hutch, the 26-year-old suspected of involvement in the Regency Hotel attack, is believed to be hiding out in Northern Ireland, following the collapse of the case against him on Wednesday.
Gardaí had claimed Mr Hutch was the "man in drag" who was seen running, along with Strabane man Kevin 'Flat Cap' Murray, following the attack on the Dublin hotel in February 2016.
He had pleaded not guilty to the murder of David Byrne, an associate of the Kinahan crime family, during a boxing weigh in at the hotel.
Mr Murray died of motor neuron disease in August 2017 before he could stand trail, he was given a paramilitary style funeral.
The Director of Public Prosecutions told the Special Criminal Court on Wednesday, they had decided not to proceed with charges of murder and firearms offences against Mr Hutch.
The charges were withdrawn due to the death of lead officer Detective Superintendent Colm Fox, found dead at Ballymun Garda Station in Dublin in February last year.
Patrick Hutch had been in prison since his arrest in north Dublin in May 2016 and was housed in the isolation wing of Cloverhill Prison.
His brother Gary Hutch was the first victim of the feud, when he was shot dead in Spain in 2015.
His father Patsy Hutch picked his son up outside the court on a motorbike and the two sped off, and it has been claimed that he crossed the border and is staying at a secret address in Northern Ireland.