AceShowbiz - California investigators have confirmed seven doctors who treated Michael Jackson will not face charges over the singer's death. The state's Attorney General Jerry Brown ordered his Narcotic Enforcement team to look into prescriptions that had been handed out to the late "Thriller" hitmaker in a bid to find physicians who may have played a part in the singer's demise.

According to reports, Jackson visited several doctors and used a number of aliases before his death, following a cardiac arrest in June 2009. Seven doctors were investigated by the state but the attorney general's spokeswoman Christine Gasparac has confirmed that no charges will be brought against them.

However, one of the unnamed medics has been referred to the California Medical Board for prescribing drugs to a Jackson alias and could face disciplinary action. Bosses at the federal Drug Enforcement Agency (DEA) have also dropped an investigation into the actions of the doctors.

According to the Associated Press, Dr. Conrad Murray - who stands accused of administering the singer with the powerful anaesthetic Propofol which led to his death - was not one of the seven doctors under investigation. Murray has pleaded not guilty to a charge of involuntary manslaughter.