A woman accused of causing the death of her unborn child by overdosing on prescription drugs now faces more charges for allegedly using fictitious names to acquire prescription drugs.

Michelle Geiser Behles, 32, was charged Monday with four Class Cfelony counts of acquiring a controlled substance by deception.

Behles is identified in court documents as Michelle Geiser, Michelle Behles and Michelle Geiser Behles. She was charged on Oct. 5 with Class A felony endangerment of a child or vulnerable adult, Class C felony possession of a controlled substance and Class A misdemeanor ingestion of a controlled substance. A bond of $10,000 was set in that case and has not been posted.

The new charges allege that Behles used the fake name "Ashley Benderson" to acquire hydrocodone and cyclobenzaprine at a Washburn drugstore; the name "Melissa Anderson" to acquire hydrocodone and zanaflex from a Turtle Lake drugstore; the name "Allison Hendrickson" to acquire hydrocodone and soma from a Turtle Lake drugstore; and the name "Michelle Bahles" to acquire hydrocodone from a Turtle Lake drugstore.

According to an affidavit from McLean County Sheriff's Deputy Sam Lincoln, Behles was identified through photograph lineups by employees of the drugstores as the person who used the names when purchasing the drugs. The affidavit said Behles is alleged to also have used fake Social Security numbers, dates of birth and mailing addresses in three of the incidents.

The case was investigated by the Mercer-McLean County Narcotics Task Force, of which Lincoln is a case agent.

Behles was charged with the original three charges after an ambulance was called to her Garrison home for a report of an unresponsive female. There, ambulance personnel found Behles semi-conscious with pill bottles near her. The bottles were for hydrocodone, locet and cyclobenzaprine, according to court documents.

According to documents, Behles is accused of possessing and ingesting those drugs, as well as tizanidine, without valid prescriptions.

An ultrasound performed at Medcenter One showed the baby she was carrying had no heartbeat.

Dr. William Massello, the state forensic examiner, performed an autopsy on the child and found that "the child would have been viable outside the mother's womb, however the baby would have needed assistance."

Documents said a doctor at Medcenter One found that Behles had toxic levels of several drugs in her system, and the baby, which was more than 29 weeks along, did not survive the overdose.

(Reach reporter Jenny Michael at 250-8225 or jenny.michael@;bismarcktribune.com.)