VALPARAISO, Ind. (CBS) — A Northwest Indiana teacher is accused of demanding nude pictures from a student in exchange for a grade.

A 17-year-old female student in Valparaiso said Brian Kunze told her in order to keep her A in class, she had to send him the nude pictures.

READ MORE: South Shore Woman Sees Police Activity After Shooting Leaves Man Dead, Only To Find Out It Was Her Own Beloved Brother

Kunze, 31, was a teacher at Wheeler High School in Valparaiso.

CBS 2 showed his mugshot on air Wednesday night, because police believe there may be other victims out there.

READ MORE: Chicago Weather: Patchy Frost Well Inland

The incident dates back to May 2019. Kunze has not worked at the school since.

The student alleged that Kunze pressured her to send nude photos.

Police said when they seized the teacher’s cellphones and computers, other victims surfaced.

MORE NEWS: Constituent Says She And Others Were Kicked Out Virtual Meeting With Embattled Ald. Jim Gardiner, And Alderman Isn't Providing Answers

Kunze was arrested and charged with receiving child pornography.