LOS ANGELES — A woman known as the “Ketamine Queen,” charged with selling Matthew Perry the drug that killed him, agreed to plead guilty Monday.

Jasveen Sangha becomes the fifth and final defendant charged in the overdose death of the “Friends” star to strike a plea agreement with federal prosecutors, avoiding a trial that had been planned for September.

She agreed in a signed statement filed in court to plead guilty to five federal criminal charges, including providing the ketamine that led to Perry’s death.

In a brief statement, Sangha’s lawyer Mark Geragos said only, “She’s taking responsibility for her actions.”

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 and court documents.

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

The final plea deal came a year after federal prosecutors announced that five people had been charged in Perry’s Oct. 28, 2023 death after a sweeping investigation.

Sangha admitted in the agreement to selling four vials of ketamine to another man, Cody McLaury, hours before he died from an overdose in 2019. McLaury had no relationship to Perry.

Prosecutors will drop three other counts related to the distribution of ketamine, and one count of distribution of methamphetamine that was unrelated to the Perry case.

Sangha will officially change her plea to guilty at an upcoming hearing, where sentencing will be scheduled, prosecutors said. She could get up to 45 years in prison. The judge is not bound to follow any terms of the plea agreement, but prosecutors said in the document that they will ask for less than the maximum.

She and Dr. Salvador Plasencia, who pleaded guilty last month, had been the primary targets of the investigation. Three other defendants — Dr. Mark Chavez, Kenneth Iwamasa and Erik Fleming — pleaded guilty in exchange for their cooperation, which included statements implicating Sangha and Plasencia.

Perry was found dead in his Los Angeles home by Iwamasa, his assistant. The medical examiner ruled that ketamine, typically used as a surgical anesthetic, was the primary cause of death.