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One of the doctors charged in the drug-related death of actor Matthew Perry last year has appeared in a US court.
Mark Chavez was bailed at the hearing in Los Angeles on Friday during which he agreed to stop practising medicine. He is "incredibly remorseful", his lawyer said.
Dr Chavez, one of five people charged over Perry's death, has agreed a plea deal with prosecutors, but did not enter it formally during the hearing.
Perry, 54, died at his Los Angeles home last October. A post-mortem examination found a high concentration of the drug ketamine in his blood and determined the "acute effects" of the controlled substance had killed him.
Police announced the results of their investigation and two weeks ago.
They said they had uncovered a "broad underground criminal network" of drug suppliers who distributed large quantities of ketamine.
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Three of those charged - including Perry's assistant - have already pleaded guilty to drug charges.
Dr Chavez has admitted one count of conspiracy to distribute ketamine.
At Friday's court hearing, bail was set at $50,000 (£38,000) with Mr Chavez ordered to surrender his passport and agree not to continue practising medicine.
"My client is accepting responsibility. He’s doing everything in his power to co-operate, to help in this situation," defence lawyer Matt Binninger said.
US District Court
Ketamine - a powerful anaesthetic - is used as a treatment for depression, anxiety and pain.
People close to Perry, who starred as one of the lead characters on the NBC television show Friends, told a coroner's investigation after his death that he was undergoing ketamine infusion therapy.
But his last session had taken place more than a week before his death. The medical examiner said the ketamine in Perry's system could not have been from the infusion therapy because of the drug's short half-life.
The levels of ketamine in his body were as high as the amount given during general anaesthesia, according to the medical examiner.
An indictment filed in a federal court detailed the elaborate drug purchasing scheme that prosecutors say ultimately led to Perry's death.
Prosecutors said Perry's assistant, Kenneth Iwamasa, worked with two doctors to provide the actor with more than $50,000 (£38,000) of ketamine in the weeks before his death.
Officials argued those involved in the scheme tried to profit from Perry's well-known substance-abuse issues. One of the doctors, Salvador Plasencia, is alleged to have written in a text message: "I wonder how much this moron will pay."
Dr Plasencia, 42, provided Perry with ketamine "outside the usual course of professional practice and without a legitimate medical purpose", according to the indictment.
He also allegedly taught Iwamasa how to inject Perry with ketamine without proper safety procedures and surveillance, the indictment said.
In the four days before his death, Iwamasa gave Perry at least 27 shots of ketamine, prosecutors alleged.
He did so even after a large dose of ketamine earlier that month caused Perry to "freeze up", leading Mr Plasencia to advise against a similar-sized dose in the future, prosecutors said. The doctor still left several vials of the drug with the actor and his assistant after the incident, according to the indictment.
Others charged in the case include Jasveen Sangha, the so-called "Ketamine Queen" who prosecutors allege supplied the drug to Plasencia through the help of two other co-defendants, Erik Fleming and Dr Chavez.
US District Court
Prosecutors say the defendants attempted to cover up their alleged crimes after Perry's death.
Ms Sangha allegedly texted another suspect, telling him to "delete all our messages". Dr Plasencia also falsified medical records, according to the indictment.
Drowning was also listed as a contributing factor in Perry's death, which was ruled an accident. Other contributing factors were coronary artery disease and the effects of buprenorphine, which is used to treat opioid use disorder.
At the height of his fame, Perry was battling with addiction to painkillers and alcohol, and attended rehabilitation on multiple occasions. He detailed his struggle with substance use in his memoir, Friends, Lovers, and the Big Terrible Thing.
In 2016, he told BBC Radio 2 that he could not remember three years of filming during Friends, because of drink and drugs.
After attempts at treatment, he wrote in his memoir that he had been mostly sober since 2001 - "save for about 60 or 70 mishaps".
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