A cyclist was found on a Tipperary footpath with serious injuries on Wednesday afternoon.
Gardai are appealing for witnesses after the man, who was in his 40s, was discovered at around 3.20pm on Sarsfield Street in Nenagh.
He was rushed to University Hospital Limerick with serious injuries, but investigations aren't yet sure how they occurred.
The road is currently closed for a technical examinations, while local diversions are in place.
A spokesman said: "Gardaí are investigating a serious single vehicle road traffic collision involving a bicycle that occurred at approximately 3:20pm on Wednesday, 18th November, 2020, at Sarsfield Street, Nenagh, County Tipperary.
"The cyclist, a man in his 40s, was taken to University Hospital Limerick with serious injuries.
"The road is currently closed pending a technical examination by Forensic Collision Investigators. Local diversions are in place.
"Gardaí at Nenagh are appealing for any witnesses to come forward.
"Gardaí are also appealing for any road users who may have camera footage (including dash-cam) who were travelling on Sarsfield Street from 3pm to 3:20pm to make this footage available to Gardaí.
"Anyone with information is asked to contact Nenagh Garda Station on 067 50450, the Garda Confidential Line on 1800 666 111, or any Garda Station."
