A Utah couple was arrested this week after their teenage daughter called police on Thursday to report that “her father had been raping her for the last year and a half.”

Provo officers questioned the couple — the teen’s stepfather and mother — and they admitted they’d been having sex with her for more than a year, KSL reported.

The couple, both in their mid to late 30s, were jailed for investigation of forcible sexual abuse, forcible sodomy, and object rape. The stepfather is also being investigated for rape.

“(The stepfather) explained that a year ago he and the victim’s mother learned that the victim was wanting to meet and have sex with strangers,” an arrest affidavit says. “(He) said that together with his wife they decided that teaching the victim about sex, and engaging in sexual acts with the victim would be safer for her than having sex with strangers.”

KSL did not name the parents to protect the identity of the victim.

Police said more charges may be filed as the investigation continues.

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