A Henry Sibley High School math teacher and tennis coach is under investigation by Mendota Heights police for “suspicious activity.”

West St. Paul-Mendota Heights-Eagan Area schools received a complaint against Corey Prondzinski on May 14 and “immediately commenced an investigation,” the school district said in a statement. He was put on paid administrative leave the next day.

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Mendota Heights Police Chief Kelly McCarty said she could not comment on the allegations, which she described as “suspicious activity,” because the investigation is ongoing.

The school district declined to get into specifics of the complaint, citing the Minnesota Government Data Practices Act. Under the data practices act, the district is required to release details on a complaint or investigation only if it results in disciplinary action.

According to the school district’s website, Prondzinski has been a math teacher and boys varsity tennis coach at Henry Sibley for 17 years.