Mansfield ISD teacher arrested following alleged sex assault

A special education teacher at Mansfield ISD was arrested for allegedly molesting a student.

Kelly Williams, 62, was charged with the aggravated sexual assault of a child.

The principal of Mary Orr Intermediate School sent a letter to parents acknowledging that the incident took place Monday on campus.

"The district takes this matter very seriously. That type of behavior is not tolerated in any way and does not coincide with the integrity Mansfield ISD upholds," he wrote.

Police reports indicate the assault happened before 10 a.m. in the boys' bathroom.

The school district's police department and the Tarrant County District Attorney are investigating.

One woman told FOX 4 Williams was her autistic son's favorite teacher. But, she now plans to take him to a doctor to find out if he was abused in any way.