Sangha was one of five defendants charged in connection with the Friends actor's death.

A California woman known as the 'Ketamine Queen' pleaded guilty of selling a fatal dose of drugs to actor Matthew Perry.

Prosecutors had cast Sangha, a 42-year-old citizen of the U.S. and the U.K., as a prolific drug dealer who was known to her customers as the “Ketamine Queen,” using the term often in press releases a...