A TRANSITION year student died suddenly after taking part in a hike with school friends.
Neil Quinlan (16) complained of feeling unwell when hiking in Glendalough, Co Wicklow, on Tuesday.
He collapsed in front of his shocked friends and the emergency services were called immediately.
Neil, from Cabinteely in south Dublin, was airlifted to Tallaght Hospital but died a short time later.
Last night, a message was posted on the website of St Conleth's College in Ballsbridge, where the talented drummer was a transition year student and a former pupil of Blackrock College.
"Neil passed away suddenly yesterday evening (Tuesday)," it read.
"A special assembly was held in the school this morning to inform students and to pray for the repose of his soul. Funeral arrangements will be posted as soon as we have the details."
"The whole school is just numb. Neil, or 'Quinner' as they called him, was extremely popular," school manager and former principal Kevin Kelleher said.
Neil's fellow students are expected to be offered counselling in order to help them deal with his sudden death.
Last night, a number of friends posted messages on social networking sites in tribute to the popular teenager who was also known as "Quinner".
"I don't think anyone will forget today, and we'll never forget you," wrote one.
"Still don't even know what I'm doing, I'm shocked, miss you quinlo xx."
"Neil Quinlan, a good man taken from us before his day. Shocking news to hear. You won't be forgotten," wrote one friend.
Another posted: "Rest in peace Neil Quinlan, you are truly loved by everyone Neil. God really only takes the best ones."
"Was a pleasure to know Neil Quinlan such a funny lad loved him to bits," said a friend of the Celtic supporter.
"My thoughts are with the family and friends of fellow Conlethian Neil Quinlan, who passed away tragically last night. Rest in peace," wrote another.