A post mortem today showed solicitor Sally Clark, who was wrongly convicted of killing her children, died of natural causes.
Four years ago, she was cleared of murdering her baby sons following three years in jail and a lengthy legal battle.
Sally Clark: wrongfully convicted of killing her children
A spokeswoman said post mortem tests were carried out on 42-year-old Mrs Clark, who was found dead at her home in Hatfield Peverel, Essex, on Friday.
The tests show that she appeared to have died of natural causes, although further tests would be required.
Mrs Clark was found guilty of murdering eight-week-old Harry and 11-week-old Christopher following a trial at Chester Crown Court in 1999. She was cleared by the Court of Appeal in 2003.
Mrs Clark's children died within 14 months of each other. Jurors had to decide whether the deaths were natural. The expert evidence of a paediatrician was a focal point throughout Mrs Clark's trial and appeal.
Professor Sir Roy Meadow told jurors the probability of two natural unexplained cot deaths in the family was 73 million to one. The figure was disputed by the Royal Statistical Society and other medical experts who said the odds of a second cot death in a family were around 200 to one.
Mrs Clark served more than three years in jail. Her family said, in a statement, that she "never fully recovered from the effects of this appalling miscarriage of justice".
Mrs Clark lived in Wilmslow, Cheshire, when she was arrested. Her husband Stephen, also a solicitor, moved to Essex following her conviction.