MAIZE, Kan. (AP) — A 45-year-old former Maize teacher and law enforcement officer pleaded guilty to having a sexual relationship with a 17-year-old student.

Prosecutors said Johnny Yelverton pleaded guilty Monday to two counts of unlawful sexual relations.

An affidavit released earlier this year says Yelverton had sex with the female student in his classroom at Maize Career Academy and off campus between March and May 6, when the girl’s mother and stepfather discovered their relationship.

Yelverton was arrested May 7 and resigned from his teaching position four days later. He taught fire science and law and public safety courses to Maize High School and Maize South High School students at the academy.

Before teaching, Yelverton worked for the Augusta twice as a police officer.