Dr. Timothy Sigman has surrendered his medical license and on a leave of absence from his Sebastian practice while facing federal steroid distribution charges, according to an official with the U.S. Attorney’s Office in Miami.

The 40-year-old doctor was arrested by agents of the Drug Enforcement Administration after he allegedly approved steroid and human growth hormone prescriptions illegally.

Sigman was one of the thirteen people arrested on various charges related to distributing steroids, human growth hormone, and pain pills.