Murderer Graham Dwyer punched in the face after confronting rapist Noel Maher over 'rumours'
Killer Graham Dwyer has been the victim of a prison assault, one year after he was found guilty of the murder of Elaine O'Hara.
The architect became involved in an altercation with a convicted rapist on the E3 landing of the Midlands Prison.
Sources revealed how Dwyer became "furious" when he discovered that another inmate, sex offender Noel Maher (44), was allegedly spreading rumours about him.
It is understood that Dwyer confronted Maher on Good Friday in a rage and proceeded to push him, demanding to know why there were rumours circulating about him.
However, Maher, who is currently serving a prison term for raping his stepdaughter, proceeded to punch the convicted killer, sending him crashing to the ground.
Dwyer did not require hospital treatment for his injuries but was locked into his cell for a number of hours following the incident.
"It was all over fairly quickly. Dwyer thought he was being the big man, but he was put in his place fairly quickly," a source said.
"He didn't need stitches but his ego definitely took a hit. It was all sorted and the two eventually shook hands afterwards," the source added.
It is believed the killer confronted Maher as he believed the alleged rumours spreading around the prison could impact on his upcoming appeal for the murder of Elaine O'Hara (36).
His attacker, registered sex offender Noel Maher, formerly of Barrow Way, Spa Street, Portarlington, was sentenced to 14 years' imprisonment after being found guilty of raping his then 13-year-old stepdaughter.
The incident at the Midlands Prison happened almost a year to the day since Dwyer was convicted of killing Ms O'Hara, on March 27 of last year.
The skeletal remains of the childcare worker were found on Killakee Mountain, Rathfarnham, Dublin, on September 13, 2013. However, parts of her body were never found, including the skull. Because of that, it was impossible to rule precisely how she had died.
There was no physical evidence from the remains that Ms O'Hara had in fact met a violent death.
Dwyer was convinced that this fact would result in his acquittal - but the jury returned a guilty verdict after considering detailed circumstantial evidence, including phone records and video recordings of sado-masochistic sex.
In his looming appeal, it is understood that Dwyer will be challenging the conviction on several legal issues - including the admissibility of thousands of text messages between him and his victim.
Another strand of the appeal will be that the State offered no medical evidence of how Elaine died. His case will also focus on the EU's Data Retention Directive, which obliges all service providers to store logs of customers' phone records for two years, and internet records for one year.
Trial Judge Tony Hunt ruled that the 2011 law was properly invoked and enforced, despite the EU directive having been struck down.
The architect will also claim that the jury should have been discharged on the allegation that Judge Hunt glared at Dwyer during a difficult piece of evidence.
Sources say that Dwyer is "supremely confident" that he will win his appeal.
During his time behind bars, Dwyer has been in contact with a number of female admirers - including a Russian woman and an Anglo-Spanish student au pair. He has grown his hair long and often wears it in a ponytail - prompting the nicknames 'Steven Seagal' and 'Jonathan Ross', according to Dwyer.