Two physicians who also helped supply Perry with ketamine are awaiting sentencing. Dr. Mark Chavez, 55, of San Diego pleaded guilty to one count of conspiracy to distribute ketamine. He faces up to 10 years in federal prison at his sentencing hearing next month.

A dealer dubbed the "Ketamine Queen" has agreed to plead guilty to supplying the drugs that killed 'Friends' actor Matthew Perry, the US Department of Justice has said.

She plans to plead guilty to one count of maintaining a drug-involved premises, three counts of distributing ketamine, and one count of distributing ketamine resulting in death or serious bodily inju...