On July 19, San Marcos Police Chief Howard E. Williams took media questions about the arrest of Cpl. James Palermo for causing injuries to a 22-year-old Texas State University student during the course of what his supervisor calls an illegal arrest. Palermo was arrested July 16 and charged with aggravated assault by a public servant. The next day, a second San Marcos cop was arrested on an unrelated charge. Officer David Amerson is accused of obtaining controlled substances by fraud for soliciting prescription drugs, including narcotic painkiller Oxycontin, from multiple doctors.