English teenager Stephen Sutton, who raised more than £3.2m (€3.9m) for the Teenage Cancer Trust, has died in hospital.
In a statement posted on the Stephen's Story Facebook page, the 19-year-old's family said he passed away peacefully in his sleep in the early hours of this morning.
Mr Sutton, from Burntwood, Staffordshire, was readmitted to hospital on Sunday after developing breathing difficulties caused by the re-growth of tumours.
Mr Sutton, who was diagnosed with metastatic bowel cancer aged 15, was visited earlier this month at Birmingham's Queen Elizabeth Hospital by British Prime Minister David Cameron, who praised his "incredible" efforts to help others.
In a statement after news of Mr Sutton’s death was announced, the Teenage Cancer Trust said: "We are humbled and hugely grateful for what Stephen achieved and continues to achieve for us.
"The thoughts of everyone here at Teenage Cancer Trust are with Stephen's family and friends."