A school has paid tribute to one of its GCSE students following news of her death over the weekend.
Ysgol Gyfun Glantaf head teacher Alun Davies said the school had received the news of Year 11 student Emily Stickells with "great sadness".
He said Emily had made a positive contribution to the school and had represented it in field athletics.
Students at the Welsh-medium secondary in Llandaff North have been offered support.
No details surrounding Emily's death have been released.
Mr Davies said: "Such tragic news has, of course, come as a great shock to us all and our thoughts and sympathy go out to her family and friends.
"Emily will be remembered fondly by pupils and staff."