The body of a 16-year-old boy has been recovered from a reservoir at Bohernabreena in Dublin.
The boy, who lived locally, got into difficulty in the water this afternoon.
Gardaí were called to the scene at around 4pm and his body was later taken from the water.
The body was removed from the scene this evening for a post mortem at Tallaght Hospital.
Gardaí say they are treating the matter as a tragic accident. The coroner has been notified.
Irish Water Safety has appealed to parents to make sure children are constantly monitored if they are near water.
Deputy Chief Executive Roger Sweeney said over 500,000 primary school children were on holidays at present, but said the vast majority had no awareness regarding safety measures.
He said 40 children aged 14 and under had lost their lives in drowning tragedies in the last decade.
Mr Sweeney said schools needed to ensure pupils were properly equipped to recognise and understand the danger posed by rivers, streams and other exposed water sources.