Convicted murderer Graham Dwyer will find out in October if his action against the State and the Garda Commissioner aimed at having provisions of Ireland's data retention laws struck down has been successful.

Graham Dwyer wants the High Court to strike down provisions of the law that allowed data from mobile phones be used by prosecutors as evidence during his trial for the murder of Elaine O'Hara.

The trail of destruction left by Graham Dwyer was never more painfully evident than when it led to his sentencing hearing.

Architect Graham Dwyer has been found guilty of murdering childcare worker Elaine O’Hara.

The jury is expected to retire to consider its verdict in the Graham Dwyer trial today.

Defence evidence has concluded in Graham Dwyer's trial for the alleged murder of childcare worker Elaine O'Hara.

The jury in the Graham Dwyer trial has been shown video clips of a man alleged to be Mr Dwyer appearing to stab women during sex.

The Graham Dwyer murder trial is hearing evidence about two secret phones he is alleged to have used to contact Elaine O'Hara.

A young American woman has testified that Graham Dwyer told her that he wanted to kill Elaine O’Hara if Ms O’Hara wanted him to.

Mobile phone traffic evidence has resumed in Graham Dwyer's trial for the murder of childcare worker Elaine O'Hara.

A DNA profile matching Graham Dwyer was found in stains on Elaine O'Hara's mattress, the Central Criminal Court has heard.

Graham Dwyer’s wife has told his murder trial that she recognised the spade found near Elaine O’Hara’s remains as a spade she had noticed missing from their garden.

Graham Dwyer’s sister has given evidence in her brother’s trial.

The murder trial of Graham Dwyer has been hearing from gardaí who say they extracted thousands of text messages from the phones and computer of his alleged victim Elaine O'Hara.

Graham Dwyer's murder trial has heard Elaine O'Hara had an internal violent fantasy world from the age of 12 that involved restraint situations.

The Graham Dwyer trial has heard that on the night before he’s alleged to have murdered her, a nurse suggested that Elaine O’Hara go to gardaí about a man who was constantly coming to her apartment.

Elaine O'Hara's doctor has said he was aware of her depression, but believed that she was doing "reasonably well" when she last visited in the month before her death.

The Graham Dwyer trial has heard from two men, who met Elaine O’Hara through a website that caters for alternative sexual tastes.

A court has heard Elaine O'Hara complained to a man she met on an adult website about non-consensual cutting marks on her abdomen.

Graham Dwyer's murder trial has been hearing evidence from a man who says he met childcare worker Elaine O'Hara on a sex web site.

Graham Dwyer's trial has heard he appears to have worked a normal eight-hour work shift on the day Elaine O'Hara was allegedly stabbed to death.

The Central Criminal Court has heard that murder accused Graham Dwyer drew detectives a map that led Gardaí to find a hunting knife and a flick knife in the architect's firm where he worked.

The Central Criminal Court has heard that a hunting knife and a flick knife were found in the basement of Graham Dwyer’s architects firm.

The murder trial of Graham Dwyer has been hearing more about the CCTV system at the apartment complex of his alleged victim Elaine O'Hara.

The trial of Graham Dwyer has today been hearing about searches carried out at his Dublin home and offices in connection with the murder of childcare worker Elaine O'Hara.

An angler has told Graham Dwyer's murder trial that he fished out bondage cuffs, a black blindfold and a rubber ball gag from the lake at Roundwood in September 2013.

The jury in the Graham Dwyer trial has seen a photograph of Elaine O’Hara’s punctured and blood-stained mattress, which Gardaí found following the discovery of her remains in September 2013.

Graham Dwyer's defence team has said that it accepts that the skeletal remains found at Killakee in the Dublin Mountains were those of Elaine O'Hara.

The jury in the Graham Dwyer trial has heard that a document about a "slave" lifestyle for women, and two large metal chains were found in Elaine O’Hara’s home shortly after her disappearance in August 2012.

The Central Criminal Court has heard heavy metal chains, a rope and a pvc body suit were found at Elaine O'Hara's Dublin apartment after her disappearance.

A jogger who is the last witness to have seen Dublin childcare worker Elaine O'Hara alive described her to Gardaí as "distant and uninterested".

A jury has heard Elaine O'Hara was in extremely good form and looking forward to volunteering at the Tall Ships festival on the day of her death.

The trial of a 42-year-old architect accused of murdering Dublin childcare worker Elaine O'Hara is due to begin this morning.

The jury in the trial of a 42-year-old architect for the murder of childcare worker Elaine O'Hara has been told the case is not in a position to proceed until Thursday.

Graham Dwyer has pleaded not guilty to the murder of childcare worker Elaine O'Hara in Dublin two-and-a-half years ago.

A new trial date has been fixed for the man accused of murdering childcare worker Elaine O'Hara.

The man accused of murdering childcare worker Elaine O'Hara in Dublin has failed in his latest attempt to secure bail.

The man accused of the murder of child care worker Elaine O'Hara in Dublin is to stand trial next year.

A record number of people are awaiting trial for murder in this country, with most being held in Cloverhill Prison in Dublin.

The State has been allowed two weeks to complete a book of evidence for the trial of architect Graham Dwyer who is accused of the murder of childcare worker Elaine O'Hara.

The man accused of murdering childcare worker Elaine O'Hara is due back before court in Dublin today.

The architect accused of murdering childcare worker Elaine O’Hara has today lost a Supreme Court bid to secure bail.

A Dublin man accused of murdering childcare worker Elaine O'Hara has been remanded in custody again this morning.

The man accused of murdering Elaine O'Hara has today been granted legal aid.