THE west Dublin man convicted last week of the murder of 16-year-old Melanie McCarthy-McNamara in Tallaght is under protection and in isolation in prison following threats to have him disfigured or killed.
Prison authorities were made aware that rivals of 19-year-old Daniel McDonnell had offered money for other prisoners to stab or disfigure him.
McDonnell was sentenced to life imprisonment last week after a court heard that, among other evidence, he had written a letter which contained the words: "Two in the head. The bitch is dead. Ha Ha".
His trial heard that he had a cell to himself and no contact with other prisoners for his own protection since he was detained in St Patrick's Institution in Mountjoy Prison while awaiting trial.
He was convicted on Thursday of murdering Melanie McCarthy-McNamara as she sat in a car in Tallaght with her boyfriend and another man in February 2012.