A man has died in a single vehicle crash in Limerick.

The man in his 30s was discovered by a passing motorist at Coolshine on the Caherconlish and Herbertstown at about 5.30am today.

His body has been removed to University Hospital Limerick and the road remains closed to allow a forensic examination of the scene.

It's not known exactly when the crash occurred Gardaí are appealing to anyone who may have been on the stretch of road between 6.30pm yesterday and 5.30am today this morning to contact them at Roxboro Garda station.