The post you are reporting:
I have found this press release
Conservative Party spokesman said: "It is with great sadness that David and Samantha Cameron must confirm the death of their six-year-old son Ivan.
"Ivan, who suffered from cerebral palsy and severe epilepsy, was taken ill overnight and died at St Mary's Hospital, Paddington, early this morning (Wednesday)."
The spokesman added: "David and Samantha would ask that their privacy is respected at this terribly difficult time.
Ivan was the Camerons' first child, born at Queen Charlotte's Hospital in London on April 8, 2002.
He suffered his first seizure within weeks and was in and out of hospitals all of his life.
On learning of his son's illness, Mr Cameron has said in the past: "It hits you like a freight train because all the expectations you have for your child change immediately."
They have two other children, Nancy, five, and Arthur, three.
Prime Minister Gordon Brown said he and his wife Sarah were "very saddened" about Ivan's death. Mr Brown, whose own baby daughter died in 2002, said: "Sarah and I were very saddened to hear of the death of Ivan and we have sent our condolences to David and Samantha.
"The death of a child is a loss no parent should have to bear. I know Ivan was a child who brought joy to all those who knew him and his was a life surrounded by love. The thoughts and prayers of the whole country are with David, Samantha and their family."