It has been confirmed that the man found dead at Cloverhill Courthouse this afternoon was Shane Rogers, a suspect in the murder of James Hughes in Dundalk.
Mr Rogers was found unconscious in a holding cell at Cloverhill courthouse this afternoon.
He had appeared before the district court today on a charge of murder and had been remanded in custody until next month.
Mr Rogers had been on suicide watch during his detention at Cloverhill and foul play is not suspected.
Gardaí and the Prison Service have begun separate investigations. The cell under the courthouse has been sealed off for a forensic examination.
The 32-year-old was remanded in custody on a charge of murdering Mr Hughes, who played for Crossmaglen Rangers.
He was also accused of shooting a taxi driver and Mr Hughes' female companion Patricia Byrne.
He was due to be escorted back under the tunnel to the adjoining Cloverhill Prison, but at around 1pm he was found unconscious in the cell and later pronounced dead.
A garda sergeant told the hearing last week that Mr Rogers was extremely remorseful after the killing and that he apologised to the Hughes family and friends and to Ms Byrne.
The sergeant also said that Mr Rogers could not live with himself because of what had happened.
He agreed with defence counsel that Mr Rogers was a suicide risk and Judge Flan Brennan directed that he receive medical and psychiatric attention.
Mr Rogers had been on suicide watch for the past seven days, which means he was checked every 15 minutes.
The focus of the two investigations will be how this tragedy could have happened.
