A father-of-three carried out a sustained attack on a retired grandmother, whose dismembered remains were found scattered in the Dublin and Wicklow mountains, and a claim of self-defence "did not hold any water", a prosecution barrister has told his trial today. 

The State also told the jury that there was no evidence of a single defensive wound on the deceased's body and that murder-accused Kieran Greene bore an "ill-will" against former hospital worker Patricia O'Connor.

Róisín Lacey SC, prosecuting, today began her closing speech in the trial of Mr Greene, aged 35, who has pleaded not guilty to murdering 61-year-old Mrs O'Connor at her home in Mountainview Park, Rathfarnham, Dublin 14, on 29 May 2017.

The prosecution barrister said that Mr Greene changed his account of what happened to Mrs O'Connor six months later as he was "jealous" and believed there was "a growing relationship" between Louise O'Connor and her former partner Keith Johnston. 

The deceased's daughter Louise O'Connor, aged 41, and granddaughter Stephanie O'Connor, aged 22, both of Millmount Court, Dundrum Road, Dublin 14, and Louise O'Connor's ex-partner Keith Johnston, aged 43, of Avonbeg Gardens, Tallaght, Dublin 24, are all charged with impeding the apprehension or prosecution of Kieran Greene, knowing or believing him to have committed an arrestable offence, to wit the murder of Mrs O'Connor on 29 May 2017.

All three have pleaded not guilty to impeding the apprehension or prosecution of Mr Greene.

The six-week trial has heard that the body of Mrs O'Connor was dismembered into 15 separate parts that were found at nine different locations over a 30km range in the Dublin and Wicklow mountains between 10-14 June 2017. 

Former Depute State Pathologist, Dr Michael Curtis, has given evidence that Mrs O'Connor's head was struck a minimum of three blows with a solid implement and the cause of death was blunt force trauma to the head.

Ms Lacey said the prosecution's case was that Mrs O'Connor lost her life in the bathroom of Mountainview and Mr Greene had struck her in a manner which caused lacerations and injuries. 

Ms Lacey said there was not one single defensive injury to Mrs O'Connor and the basis of self-defence "did not hold any water". Mr Greene had adopted a highly aggressive stance in a sustained attack, which lasted up to 20 minutes, she indicated.

Ms Lacey will continue her closing speech to the jury tomorrow.