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TWIN FALLS, Idaho • A Buhl woman was repeatedly raped, beaten and held against her will for 18 months in a home that was boarded-up and booby-trapped with electrical wire, Twin Falls County sheriff's detectives said Wednesday.

Oscar Ayala-Arizmendi, 36, is charged with felony rape, first-degree kidnapping and possession of a controlled substance. His bail is $1 million.

Chains and locks were mounted to the walls in Arizmendi's home, and a large wood and metal gate kept the woman trapped in his bedroom at night, detectives say.

She told detectives she had escaped with only the clothes on her back after dark April 8 with help from her brother.

Arizmendi was arraigned Wednesday in county Magistrate Court.

Detective John Koning’s report gives this account:

The 27-year-old woman told detectives April 26 that Arizmendi had beaten and raped her multiple times, starting at a home along U.S. 30 in Buhl, then continued at another residence southeast of town.

She said Arizmendi kept her "drugged up on meth," making her smoke it once or twice a week while she was held against her will. He often placed a rope around her neck and led her around the house "like a dog."