People in Merthyr Tydfil are in a state of shock following the tragic death of a five-year-old in Greece.
Theo Treharne-Jones is thought to have died at the Atlantica Holiday Village resort on Saturday.
He has been described as a "lovely little boy, who brought laughter and happiness to everyone".
Theo attended Greenfield School in Pentrebach and people in the local area have spoken of their disbelief and sadness about his death.
Keith Payne, 60, who lives nearby said neighbours were heartbroken by the news.
He said: "It’s just a terrible time for them and their families.
“I can’t believe it, especially a five-year-old little boy."
Other residents said they find it "hard to put into words".
Beverley Herbert, 40, said: “My youngest is the same age as her youngest and my middle child is the same age as Theo.
“When you hear something like that you feel it.
“It’s hard to put into words what his family must be going through.”
Staff and pupils at Greenfield School are also said to be devastated.
Wayne Murphy, head teacherl, said: "I am aware of these tragic events and the loss of this lovely little boy, who brought laughter and happiness to everyone.
"Our thoughts and deepest condolences go out to the family and friends at this tragic time."
Merthyr Tydfil Council issued a statement saying they will be supporting staff and pupils at the school "during this terrible time".
A spokesman added: "It is with great sadness that the local authority has heard of the death of one of its young pupils - Theo Treharne-Jones - whilst on holiday on holiday with his family on Kos.
"The local authority will be supporting the staff at Theo's school and his fellow pupils, as well as supporting the schools which his siblings attend in the county borough."
A Foreign and Commonwealth Office official said: "We are supporting the family of a British child who died in Kos, Greece, and our staff are in touch with the local authorities."
