SOUTH Wales Police are investigating the sudden death of a 14-year-old boy.
He died after being rushed to hospital on Wednesday this week.
Phil Collins, the headteacher of the school in Pontypool which the teenager attended, has written to parents saying everyone was "united in our loss".
It is the third sudden death of a teenager in South Wales this week, including Swansea girl Nyah James.
Mr Collins said in the letter: "It was with great sadness and shock that we learned today of the passing of one of our pupils.
"We are united in our loss and it will take us some time to come to terms with this news. We are a strong community and will come together to support each other in the coming days and weeks."
Friends are planning to light lanterns in his memory this evening.
Gwent Police said the boy's death was not being treated as suspicious.
A statement said: "A 14-year-old-boy from the Pontypool area was taken to Nevill Hall Hospital on Wednesday, where he was sadly pronounced deceased.
"The death is not being treated as suspicious and a file has been submitted to the coroner."