JACKSONVILLE, Fla. -- A Jacksonville doctor was recently arrested and is facing drug charges after police said he traded prescription drugs for sex.

According to investigators, 70-year-old Dr. Benjamin Malalang admitted to them that he has been trading prescriptions for sexual favors.

Malalang, who specializes in acupuncture, is now accused of serious drug charges.

"This doctor was trading sex for Oxycontin prescriptions," said Jacksonville Sheriff's Office Chief John Hartley.

Investigators said about a week ago they got a tip from a woman who said the doctor would invite her to his Arlington home or to his office for her to perform a sex act on him and afterward he would write and give her a prescription in her name for Oxycontin.

On Thursday, police said they set up a sting and sent the woman and an undercover officer to Malalang. They said both agreed to the sex for prescription deal.

The sting resulted in Malalang's arrest.

According to a police report, "He admitted to have sex in exchange for Oxycontin prescriptions for the last six months to a year."

Hartley said the doctor admitted that there are at least four or five other women that had the same agreement with him.

Police continue to search for other possible victims, saying the alleged sex-for-drug deals could end in death.

"We'd like to get the message out to the family members and friends that this is a killer. It's not hard to get addicted and it's not hard to overdose," Hartley said.

Anyone with who believes they've been victimized or knows a victim of Malalang is asked to call JSO at 904-256-5990.