The State’s appeal has important implications for the investigation and prosecution of serious crime and may also impact on Dwyer’s separate appeal over his 2015 conviction for the murder of childcare worker Elaine O’Hara.

The Supreme Court has referred convicted murderer Graham Dwyer’s challenge to the gardaí’s access to his phone data to the European Court of Justice.

A majority Supreme Court has decided to refer key issues in convicted murderer Graham Dwyer’s mobile phone data retention case to the EU Court of Justice.

A seven-judge Supreme Court will give judgment on a later date on the State’s appeal over a key phone data ruling which could assist Graham Dwyer in seeking to overturn his conviction for the murder of childcare worker Elaine O’Hara.

The State has advanced a "worst case" scenario about the impact of Graham Dwyer’s successful challenge over the admissibility of mobile phone call data records as evidence at his trial

An “enormous amount” is at stake for the fight against serious crime in the State’s appeal against a key ruling in favour of convicted murderer Graham Dwyer, the Supreme Court has been told today.

The Supreme Court is due to begin considering whether mobile phone evidence that helped convict Graham Dwyer was invalid.

The Supreme Court is likely to proceed next month to hear the State's appeal against an important ruling which could assist Graham Dwyer in his separate appeal against his conviction for the murder of childcare worker Elaine O'Hara, the Chief Justice has indicated.

The Supreme Court has agreed to hear a "leapfrog" appeal by the State against an important ruling in favour of convicted murderer Graham Dwyer. A hearing date for the appeal will be fixed later.

Three Supreme Court judges will meet next week to consider whether to hear a "leapfrog" appeal by the State against an important ruling in favour of convicted murderer Graham Dwyer.

The State is to seek a ‘leapfrog appeal’ before the Supreme Court against a key ruling in a case brought by Graham Dwyer.

The State has yet to announce if it will appeal a High Court ruling in favour of Graham Dwyer which forms part of his bid to overturn his conviction for the murder of childcare worker Elaine O'Hara.

Garda HQ is concerned about the impact the High Court ruling in the Graham Dwyer case will have on future investigations into serious crime.

‘Painstaking investigation, while having regard to privacy rights as then understood, was impressive’

Professor of Law Shane Kilcommins explains the High Court ruling data retention, the implications it might have on Graham Dwyer's case and ongoing investigations

There are calls for new laws on data retention to be brought forward before Christmas in response to yesterday's judgement in relation to Graham Dwyer's case.

Legal experts have raised doubts over whether Graham Dwyer will succeed in overturning his murder conviction despite winning a High Court action over the use of mobile phone data as evidence at his trial.

It was very nearly the perfect murder. That was how prosecution counsel Sen Guerin SC described the killing of Elaine O’Hara on the opening day of the Graham Dwyer murder trial.

When Graham Dwyer was convicted in 2015 of the murder of Elaine O’Hara, it was a culmination of a trial that gripped the country.

The Minister for Justice, Charlie Flanagan, has said that the High Court judgement in favour of Graham Dwyer will have to be considered very carefully.

Graham Dwyer has won an important legal battle against the State and the Garda Commissioner as part of his bid to overturn his conviction for the murder of childcare worker Elaine O'Hara.

One of the country’s most notorious convicted killers is awaiting a decision on an action he is taking to strike down Ireland’s communication data laws.

It is costing the tax-payer almost €2,000 a week to incarcerate the murderous gang boss, John Dundon (36) along with the dwindling numbers of subversive prisoners at the maximum security Portlaoise prison.

The State does not accept Graham Dwyer's constitutional right to privacy was breached when retained data generated by his mobile phone was accessed by gardai investigating the murder of childcare worker Elaine O'Hara.

Graham Dwyer "cannot escape" a court ruling that retained data generated by his mobile phone could be used as evidence against him during his trial before the Central Criminal for the murder of Elaine O'Hara.

The sole purpose of Graham Dwyer's challenge against Ireland's data retention law is to show his rights were breached when information from his mobile phone was used by prosecutors at his trial for the murder of Elaine O Hara, the High Court has heard.

A leading expert in national security and counter terrorism has told the High Court data retention regimes need to be broad in their scope if they are to be effective in the detection and prevention of serious crime.

The European Court of Justice (ECJ) has found that domestic laws of EU member states allowing the indiscriminate retention of telecommunications data are "not permissible" and are "off the menu," the High Court has heard.

A report by a former Chief Justice John Murray supports Graham Dwyer's claim that Ireland's data retention legislation breaches European laws, the High Court has heard.

Convicted murderer Graham Dwyer has asked the High Court to strike down a law which allowed data, such as telephone records, to go before the jury during his trial for the murder of Elaine O'Hara.

A legal action taken by convicted murderer Graham Dwyer against the State is due to begin this morning.

Convicted murderer Graham Dwyer's High Court challenge against the Garda Commissioner and the State over the use of mobile phone records during his trial is due to commence tomorrow.

A three-judge divisional court will not be convened to hear a High Court action brought by convicted murderer Graham Dwyer against the Garda Commissioner and State over the use of mobile phone records.

A High Court action brought by convicted murderer Graham Dwyer against the Garda Commissioner and State over the use of mobile phone records could be heard by a three judge divisional court.

Graphic details of the murder of Elaine O’Hara at the hands of sadistic killer Graham Dwyer have been reconstructed for a major US television crime network.

Graphic details of the murder of tragic Elaine O'Hara at the hands of sadistic killer Graham Dwyer have been reconstructed for a major US television crime network.

The lawyers involved in the long-running trial of killer Graham Dwyer shared almost €900,000 in criminal legal aid payments last year.

A book about one of Ireland's most notorious killers will not be stocked in his prison's library over fears he could be bullied.

The costs associated with the marathon Graham Dwyer murder trial has helped push the lawyer bill for the first six months of this year for the Director of Public Prosecutions to over €7.4m.

Graham Dwyer's girlfriend said today that she is pulling back from the relationship, but hasn't told him because she doesn't want to "hurt his feelings".

Graham Dwyer is to appeal his murder conviction.

It will be announced today if Graham Dwyer will appeal his conviction for the murder of Elaine O'Hara

Graham Dwyer has until close of business tomorrow to lodge an appeal against his conviction for the murder of Elaine O'Hara.