The prosecuting barrister in the Patricia O'Connor murder trial says she believes her daughter and granddaughter told lies to support a ruse that she was still alive.

Louise and Stephanie O'Connor are accused of impeding the apprehension or prosecution of the man accused of her murder at her home in Rathfarnham, Dublin.

Kieran Greene is accused of murdering his partner's mother, Patricia O'Connor, in the bathroom of the home they shared in May 2017.

In her closing speech on Monday, prosecuting barrister Roisin Lacey focused on the case against him - but she turned her attention today to the cases being made against his partner Louise O'Connor, her daughter Stephanie and Stephanie's father Keith Johnston.

They are all accused of impeding Mr Greene's apprehension or prosecution.

She claimed a figure seen emerging from the house at 9.34pm with a suitcase is Stephanie - pretending to be her grandmother to make it look like she was still alive.

She said her mother Louise emerged in the CCTV footage a minute later to bolster the ruse.

Ms Lacey accused them all of telling lies.

In relation to Mr. Johnston, she said it was the prosecution's case that he bought various tools like hacksaws, blades and axes knowing that they were to be used to dismember Ms O'Connor, and that his failure to mention these purchases to Gardaí inferred guilt.

Main image: Patricia O'Connor | Image: Supplied

Reporting by Frank Greaney