A man (19) has drowned at a lake in Co. Roscommon.

It happened at Drinaun lake near Strokestown before 8 O'clock yesterday evening.

A search was launched after the boy went missing involving gardaí, sub-aqua units, and the Coastguard helicopter - his body was found at around midnight and brought to the morgue at Roscommon hospital.

A post mortem examination is expected to be carried out today.

Roscommon Co. Councillor Tom Crosbie says the young man was swimming with a group of friends in a lake that's well known for bathing:

It's the 4th drowning this week and comes after the death of a boy (10), also yesterday evening, in Youghal, Co. Cork. 

Rodger Sweeney, Deputy CEO at Irish Water Safety, spoke to Newstalk's Lunchtime Thursday: 

In light of the recent weather, drinkaware.ie and Irish Water Safety have issued a reminder of what happens to your body when you drink alcohol and swim.

It says, "Alcohol consumption is a contributory factor in nearly a third of all drowning’s in Ireland each year. Alcohol slows down people’s reaction time, impacts their coordination, and affects their perception of distance and direction. When it comes to water-sports, this can be an extremely dangerous combination."

If you notice someone is in difficulty in the water:

• Shout and encourage them to kick their legs.
• Reach with a tree branch, stick, hurley, or even clothing to try and provide something for the person to grab hold of.
• Throw a football or anything that floats in to help the person stay above the water.

Fionnuala Sheehan, Chief Executive of drinkaware.ie added, “People often don’t make the correlation between what they have drunk and the affect it could have on their safety in the water. It’s really important for people to know what a standard drink is, and how long it takes for it to leave your body. This isn’t a message just for when you’re getting behind the wheel of a car; it’s equally dangerous to get involved in water-based activities like surfing, sailing, jet-skiing, or swimming if you’ve got any alcohol in your system—even from the night before.”

“There is approximately one standard drink in a glass—not a pint—of beer, lager, or cider; a small glass of wine; or a single pub-measure of spirits. On average, it takes about an hour for the body to process a standard drink. If you’ve had a few drinks and plan to go out on or into the water, then we would encourage you to do the maths and hold off until the alcohol is gone from your system.”

The message to the public from drinkaware.ie and Irish Water Safety is to never ever drink and dive or swim or sail.