Two Dublin men wanted in Northern Ireland on charges including the attempted murder of a PSNI officer have launched High Court challenges over an alleged failure by gardaí to provide them with information and records following their arrest in 2015.

The applications have been brought by Ciaran Maguire and Sean Paul Farrell who are wanted in connection with attempted murder of a police officer in 2015 and possession of explosives with intent to endanger life.

They have both objected their extradition on grounds including they fear for their well-being, health and safety.

They claim they were taken to different Garda stations and interviewed following their arrest in the Lifford area of Co Donegal in June 2015.

Forensic samples were also taken from them while they were detained in custody.

They both believe evidence that was gathered by gardaí while they were in custody will be used in their intended prosecution in Northern Ireland.

The reliance on such evidence is one of their points of objection against the extradition request.

Lawyers for the two men requested information from Gardaí, including copies of their custody records from June 2015, copies of statements they made, and details of any samples or items taken from them by gardaí.

Lawyers acting for Mr McGuire of Kippure Park, Finglas, sought information from the Garda Superintendent at Letterkenny Garda Station.

Mr Farrell of Kilfenora Road, Crumlin, sought information from the Superintendent at Milford Garda Station. 

However gardaí have not provided them with the information sought.

They claim they are entitled to the information sought and say it is relevant to the extradition proceedings.

They also claim the failure to disclose the information sought interferes with their Constitutional rights and rights under the European Convention on Human Rights

In their judicial review proceedings against the Minister for Justice and Equality and the Garda Superintendents at the stations where they were questioned, they seeks orders that they be provided with the information they have requested.

The minister has decided to proceed with the hearing of the extradition requests. Those hearings should not proceed until their High Court application has been heard, they also argue.

The men's application came before Ms Justice Margaret Heneghan at the High Court today.

Counsel for the State,Tony McGillicuddy BL, suggested to the court that the judicial review applications be heard at the same time as the extradition requests, which are due to begin before the High Court tomorrow. 

The judge said she was referring the judicial review cases to the judge hearing the extradition requests, Ms Justice Aileen Donnelly.

Ms Justice Donnelly could then consider if she wished to hear the judicial review applications as well as the extradition requests, Ms Justice Heneghan added.

Ms Justice Heneghan adjourned the matter to next week pending Ms Justice Donnelly's decision.