Fiosrú, the office of the Police Ombudsman, is investigating the circumstances of a road traffic incident in Co Cork, in which a woman died.
The woman was critically injured in the incident which occurred in Ballyellis in Mallow at around 6pm yesterday.
She was pronounced dead a short time later.
Her body was removed to Cork University Hospital, where a post-mortem examination will be carried out.
It is understood the woman had an interaction with gardaí earlier in the evening.
A Garda spokesperson said the matter has been referred to Fiosrú.
Fiosrú confirmed it had received a referral from An Garda Síochána yesterday.
"The referral was made by a Garda Superintendent under Section 203(1) of the Policing, Security and Community Safety Act, 2024.
"One of Fiosrú's on-call team of investigators attended the scene. The team has and will continue to engage with the family concerned," it said.