DULUTH — A Duluth teacher is accused of having sex with a former student at her home earlier this month.

Thirty-three-year-old Karla Winterfeld was charged Wednesday with first-degree criminal sexual conduct.

Winterfeld was arrested Monday, the day Duluth police were notified about the alleged contact. Authorities say the 15-year-old boy is a former student of Winterfeld’s.

According to the criminal complaint, police collected evidence that included a recording of sexual acts, photographs and text messages.

Winterfeld requested a public defender, but a judge rejected that request.

Her bail was set at $100,000.