Dwyer was described as ‘sadistic and brutal pervert’ for murder of Elaine O’Hara

From March 7th, 1997 until April 20th, 2015

Sister of victim tells court of incredibly difficult and painful time for family

Has been in jail for last 18 years after brutal double murder in Roscommon

Mark Nash and Dean Lyons both made admissions to killings in sheltered accommodation

Stella Nolan, sister of Sylvia Sheils, talks about woman who was murdered in 1997

Judge refuses to backdate sentence to date of original direction to charge Nash in 1999

Man is accused of killing Sylvia Sheils and Mary Callanan at Grangegorman in 1997

Court heard there are two counts against accused which require two separate verdicts

Jury told accused is ‘most unfortunate person’ if innocent of Grangegorman murders

Prosecution says there are a series of ‘amazing coincidences’ if Nash is not guilty

More blood flakes would’ve been expected on jacket if accused had been present at crime scene

Trial told examination of jacket particle yielded profile match with victims

Forensic scientist says she did not believe there were written rules for cleaning in 1997

Dr Fiona Thornton told court she carried out a visual examination on black velvet jacket for blood stains but didn’t find any

Button from accused’s jacket produced a negative DNA result when tested in 1998

Mark Nash trial hears gardaí went to flat the accused shared with girlfriend to get jacket

Accused has pleaded not guilty to murder of Sylvia Shields and Mary Callanan in 1997

Accused has pleaded not guilty to the murder of Sylvia Shields and Mary Callanan

Now-deceased man was charged with murders, but charges later withdrawn