The man, who was in his 60’s died this morning in University Hospital Limerick after an accident at Terryglass, Lough Derg, Co. Tipperary.
It is understood that he was walking beside the lake before falling in.
The man, who is from Limerick, was pulled from the water by a local boat and received CPR and AED.
The man was airlifted to Limerick Regional Hospital by Shannon based Irish Coast Guard Helicopter R115.