A man suspected of leaking Michael Schumacher's medical files has been found hanged in his cell, prosecutors in Zurich said.
The man, who was not named but described as a manager at Swiss helicopter company Rega, was arrested on Tuesday on suspicion of violating patient privacy and medical secrecy.
Prosecutors said there was no indication a third party was involved in the death.
Schumacher, who suffered severe head injuries in a ski accident in the French Alps last year, was transferred from Grenoble hospital to University Hospital of Lausanne on June 16 after emerging from a coma.
His patient details were kept anonymous.
Last month the French daily newspaper "Le Dauphine Libere" reported
that leaked documents were being offered to European media for some
60,000 Swiss francs ($67,200).
A statement from the former World Champion's management company said: "For several days stolen documents and data are being offered for sale. The offeror claims them to be the medical file of Michael Schumacher.
"We cannot judge if these documents are authentic. However, the documents are clearly stolen.
"The theft has been reported. The authorities are involved. We expressly advise that both the purchase and the publication of such documents and data is forbidden."
A leading neurosurgeon has warned that it is "extremely unlikely" that Michael Schumacher will make a full recovery, even though he has now woken up from a coma.
Tipu Aziz, professor of neurosurgery at the University of Oxford said the driver was likely to be "better than he was" but because he had been in a coma so long "a full recovery is extremely unlikely".
"The fact he was in a coma for so long ... we can assume that he has had quite a bad injury. People don't tend to make a full recovery from that sort of injury," Professor Aziz added.
In a statement, the family thanked his doctors and medical team, and the many members of the public who wished him well. They said they were "sure" the good wishes helped him.
Michael has left the CHU Grenoble to continue his long phase of rehabilitation. He is not in a coma anymore.
His family would like to explicitly thank all his treating doctors, nurses and therapists in Grenoble as well as the first aiders at the place of the accident, who did an excellent job in those first months.
The family also wishes to thank all the people who have sent Michael all the many good wishes to Michael. We are sure it helped him.
For the future we ask for understanding that his further rehabilitation will take place away from the public eye.