The High Court has heard convicted killer Graham Dwyer maintains his innocence over the murder of Elaine O’Hara.
The former architect is taking a legal action against the State over the use of mobile phone data in his trial.
Dwyer wasn’t present for today’s hearing which is scheduled to last two weeks.
Mobile phone data played a substantial role in the Prosecution’s case against Graham Dwyer.
The 45 year old with a former address in Foxrock in Dublin was convicted by a jury in 2015 of stabbing Elaine O’Hara to death for his own sexual gratification.
He claims his right to privacy was breached because of laws surrounding how mobile data is retained and his legal action against the State began today.
Dwyer’s barrister said his work phone is at the centre of the case and how it connected with two other phones to show his movements.
The court heard Graham Dwyer’s phone data featured heavily in his garda interviews and questions were put to him about where his phone was pinging at certain times and places.
A reminder about the graphic nature of texts between Dwyer and Elaine O’Hara was also heard in court - including one text which read - **‘It's your fault I want to kill and you won't let me stab you’’.
The Judge was told Dwyer maintains his innocence for her murder and is appealing his conviction.