A Tigard man is accused of sexually abusing three underage girls and detectives fear there could be more victims.
Washington County deputies arrested Edmund Enriquez, 40, on June 19.
At first, he faced five charges ranging from first-degree rape to first-degree encouraging child sex abuse.
As of Wednesday, investigators said they had added an additional dozen sex and drug-related charges, bringing the total number Enriquez faces to 17.
Four of the charges are measure 11 crimes.
Deputies told FOX 12 it is likely more charges will be added at a later time.
Authorities began their investigation after responding to a report from a parent whose underage daughter disclosed she had used drugs and had sex with an older man.
During the course of the investigation, deputies identified Enriquez as a suspect.
Investigators believe he would lure girls ranging in age from 14 to 17 to different locations with drugs and engage in sexual activity with them, deputies said.
One of those locations is a wooded area in the 9200 block of SW Barnes Road, FOX 12 learned.
Deputies said they also believe Enriquez also lured his alleged victims to his most recent home in the 10200 block of SW McDonald Street in Tigard and his previous residence in the 4100 block of SW Hocken Street in Beaverton.
Enriquez drove a 1998 red Volkswagen Jetta and had a ponytail with the sides of his head shaved.
Deputies said this is the hair style the suspect had during the last year and they believe he would go by "Eddie" as a nickname.
Anyone with information is urged to contact the Washington County Sheriff's Office Child Abuse Division at (503) 846-2500.
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