A post-mortem examination has been carried out on the body of a woman found in a burnt-out car in Co Cork.
The remains of Mary O’Keeffe, who was in her 70s, were discovered in Doneraile on Thursday.
Her remains were discovered inside a car that was on fire in the area at around 4.30pm.
A search of the locality was carried out and a man was rescued by Gardaí from a nearby river.
A 62-year-old man was arrested last night on suspicion of unlawful killing - after being discharged from hospital.
He is being held at Fermoy Garda Station.
Ralph Riegel, Southern Correspondent for the Irish Independent, says the results of the post-mortem exam are central to the Garda investigation.
He told Newstalk Breakfast with Susan Keogh that the exam was difficult and that more tests may need to be conducted.
"The Garda investigation is progressing, central to it are going to be a number of forensic issues," he said.
This includes the vehicle where Mrs O’Keeffe's remains were found.
File photo. Picture by: Leah Farrell/RollingNews.ie"Alongside that, you have the importance of the post-mortem examination that was conducted at Cork University Hospital by the Assistant State Pathologist Margot Bolster," he added.
"Because of the intensity of the fire, the post-mortem was particularly challenging and I'm told there are a number of other tests that are going to be required.
"Critical to all of that is going to be determining the precise cause of death for Mrs O’Keeffe, and as well as that, another key element is going to be was she dead before the fire started."
Mr Riegel described the shock about the incident in Dromahane, the village outside Mallow where Mrs O’Keeffe is from.
"I was in Dromahane yesterday and I spoke her next-door neighbours, and the one thing that came across was that this was a woman, who despite being in her 70s, really was living life like someone in her 40s," he said.
"She worked as a volunteer in a sheltered housing complex, she loved music, she loved dancing, she was hailed as a great neighbour, a wonderful mother to her three sons.
"She was a widow, she had lost her husband Donal over 20 years ago, but a great community supporter.
"You could actually see the shock visible on everyone's faces yesterday when they realised that this lovely lady who lived at the centre of their community was actually involved in this tragedy."
