(AP) — A federal grand jury has indicted the office manager of a Manhattan pain clinic on charges of scheming with the doctor to illegally distribute prescription drugs.

The indictment returned Wednesday accuses 29-year-old Sarah Harding-Huffine of writing prescriptions for more than 20 people even though she is not a certified health care provider and is not licensed to do so.

Prosecutors say she used blank prescription forms that Dr. Michael P. Schuster had pre-signed for his employees to use while he was away traveling.

Harding-Huffine is charged with one count of conspiracy to distribute drugs and one count of drug distribution. Schuster was indicted in May on similar charges and is awaiting trial.

Harding-Huffine’s attorney, Nick Heiman, declined comment, saying he had not had a chance yet to review the indictment.