WILKINSBURG, Pa. -- A fifth-grade math teacher at Kelly Elementary School in Wilkinsburg is in jail, accused of touching one of his students inappropriately in the boys' bathroom.

According to the police criminal complaint, 37-year-old Michael Kosor was arrested Tuesday after the parent of a 10-year-old boy told police her son was touched by his math teacher while he was using the restroom on Jan. 14.

The criminal complaint accuses Kosor of walking up behind the boy and then touching his buttocks.

According to the boy's version, Kosor did not say anything and the boy told police he immediately pulled up his pants and ran out of the restroom.

Kosor, who has no criminal record, is charged with indecent assault and corruption of minors.

The Wilkinsburg School District told Channel 11 that student safety is the district’s priority.

The allegations are under investigation by the district, and the district said it’s in cooperation with local authorities.

The teacher has been put on leave pending completion of the investigation.

He is being held in jail on $50,000 bond.