ST. JOSEPH COUNTY, Ind. -- A 27-year-old man was arrested on one count of child seduction for allegedly having a sexual relationship with a student while he was a substitute teacher/assistant football coach at Clay High School, according to court documents.

The investigation into Andrew Steinke began after the principal received a tip in August 2018 that Steinke was having a relationship with a student, according to the probable cause affidavit.

An investigator with the Special Victims Unit conducted an interview with the victim. She told the investigator her relationship with Steinke started in October 2017 and they began having intercourse in December 2017, according to reports.

She said the relationship lasted until May 2018.

SVU investigators spoke with Steinke about the allegations.

Initially he denied the relationship saying because he's a "good looking teacher and football coach so kids start rumors," according to the probable cause affidavit.

Once Steinke learned the victim had already been interviewed, he acknowledged having sex with the victim and said the relationship ended in May 2018, reports said.

Steinke was arrested on August 9 and released on his own recognizance. He will be arraigned on Monday.

We have reached out to the South Bend Community School Corporation for further information.