A longtime abortion doctor is being accused of fraud, telling women they were pregnant when they weren’t and then giving them abortion-inducing drugs.

Dr. Nareshkumar G. Patel, 62, was arrested Tuesday at his Warr Acres clinic. The arrest was the result of an undercover operation involving three female investigators who posed as patients.

Patel has been the center of controversy repeatedly since getting his medical license in Oklahoma in May 1984. In the most notorious incident, he burned 55 aborted fetuses in 1992 in a field east of Shawnee. He was investigated over the incident but never charged.

Warr Acres police officers led Patel in handcuffs from his clinic, Outpatient Services for Women, shortly before 8 a.m. Tuesday. Officials placed a sign on the door stating: “Clinic Closed.”