An investigation is under way into a suspected hit-and-run in Co Limerick in which a man in his 20s was seriously injured.

The man was found by a passing motorist at Dullas, Croom at around 2.30am.

Gardaí believe the incident occurred sometime before that. 

The man is being treated at University Hospital Limerick for serious injuries.

Gardaí have appealed to anyone with information, particularly anyone who may have been travelling on the Ballingarry road out of Croom between 1.30am and 3am to contact Newcastle West Garda Station on 069-20650, the Garda Confidential Line on 1800 666-111, or any Garda station