Days after Michael Schumacher's medical records were stolen, multinational investigators have begun closing in a potential lead in Switzerland.

Last week, an email penned 'Kagemusha' was sent to major news agencies asking for 40,000 euros (roughly $55,000 USD) in exchange for the stolen information regarding Schumacher's condition.

French police eventually traced the email to an IP-address in a location within the Swiss city of Zurich. It is not clear how many individuals were involved with the theft of the dossier.

Investigators from France have requested help from German and Swiss authorities, according to a recent report made by Swiss news source The Local. The same report also stated that the 11-12 page stolen document contained notes written by a doctor whom was treating the F1 racing champion at the Grenoble Hospital in France at the time.

Sabine Kehm, the official Schumacher family spokesperson, issued a stern warning to those planning to publish the documents.

"The contents of any medical files are totally private and confidential and must not made available to the public," Kehm said to the press last Monday.

"We will therefore, in every single case, press for criminal charges and damages against any publication of the content or reference to the medical file."

Schumacher has been hospitalized since last December after suffering serious head trauma in a skiing accident in the French Alps. Doctors had artificially placed the seven-time world champion in a coma to reduce the chance of a potentially-lethal brain hemorrhage.

Even though the former racecar driver recently out of his coma, medical experts warned that Schumacher may never fully recover from injuries. At this time Schumacher is staying at the University Hospital of Lausanne in western Switzerland.