A man, aged in 60s, has been arrested in relation to the incident in Doneraile on suspicion of unlawful killing.
He is currently detained at Fermoy Garda Station under Section 4 of the Criminal Justice Act 1984.
Frank Roche, a councillor in the Fermoy area of Cork, said the community is in shock following yesterday's incident in Doneraile.
A woman's body was discovered at Drumdeer Wood at about 4.30pm on Thursday.
The body was found inside a car that was on fire.
A man, who was known to the woman, was rescued by gardaí from a nearby river. He is being treated at Cork University Hospital.
"It's a rural woodland area, and if you wanted to go for walk in the area you would usually go to a park which is three miles up the road," he told the PA news agency.
"This woodland area is normally used by people hunting, or shooting or hound dogs, it wouldn't be an area where people go walking."
Mr Roche, an agricultural contractor, came across the scene on Thursday evening.
"I was driving a tractor and it was only by accident that I came across it, I saw the guards but thought it was a Covid checkpoint, but then I saw more guards and realised it was serious," he added.
Two cars - one of which was burned - have been removed from the area this afternoon.
Gardaí have said they are continuing to investigate the circumstance surrounding the discovery of a body in Doneraile Co. Cork yesterday.
In a statement, gardaí confirmed that Dr. Margaret Bolster completed her examination of the scene this morning.
It continues: "The body has since been transferred to Cork University Hospital. A post mortem is scheduled to take place this afternoon."
An examination of the scene and two vehicles are being undertaken by the Garda Technical Bureau.
The man, aged in his 60s, who was rescued from the river continues to receive treatment in Cork University Hospital. His condition is believed to be stable.
Gardaí are appealing for anyone who was in the Doneraile area between 3pm and 5pm, particular anyone with mobile phone footage or dashcam footage, to contact Fermoy Garda Station on 025-82100 or the Garda Confidential Line on 1800-666-111.
A second car is being examined near the scene of the discovery of a woman’s body in the Doneraile area on Thursday afternoon.
The woman's body was found in a burning car near Drumdeer Wood and a post mortem is due to take place at Cork University Hospital today
The discovery was made after 3:30pm yesterday. The woman has been named locally as Mary O’Keeffe, a woman in her 70s from the Mallow area.
The scene is still preserved this morning and the Assistant State Pathologist Dr Margot Bolster is expected to arrive shortly.
Gardaí have confirmed that a second car which was located near the scene is also being examined.
A man, who is understood to be in his 60s, was rescued from the nearby River Awbeg shortly after the discovery of the body.
The man, believed to be from county Limerick, is understood to be in a serious but stable condition at CUH.
A garda investigation has been launched and investigators intend to speak with the man about the circumstances of the incident when doctors deem him medically fit to be interviewed.
The nature of the investigation will be determined by the results of today's post mortem examination.
EARLIER: A post mortem is due to take place at Cork University Hospital today on the body of a woman aged in her 70s, which was found in a burning car in north Cork.
The discovery was made yesterday afternoon shortly after 3:30pm in Doneraile. Emergency services attended, and the woman was pronounced dead at the scene.
A man, understood to be in his 60s, was rescued shortly afterwards from the nearby River Awbeg.
The man is also understood to be in a serious but stable condition at CUH.
A garda investigation has been launched and they intend to speak with the man about the circumstances of the incident when doctors deem him medically fit to be interviewed.
The nature of the investigation will be determined by the results of a post mortem examination on the woman.
In a statement issued yesterday, gardaí are appealed for witnesses: "Gardaí are appealing for anyone who was in the Doneraile area between 3pm and 5pm, particular anyone with mobile phone footage or dashcam footage, to contact Fermoy Garda Station on 025-82100 or the Garda Confidential Line on 1800-666-111."