NAPERVILLE, Ill. (CBS) — A Naperville school district has fired a teacher after a student was bound with duct tape in school.

As WBBM Newsradio’s Bernie Tafoya reports, the longtime substitute teacher allegedly watched as one of his students duct taped his own wrists together last week at Graham Elementary School, at 2315 High Meadow Rd. in Naperville, a District 204 spokeswoman told the Naperville Sun.

LISTEN: WBBM Newsradio’s Bernie Tafoya reports

The teacher was fired as soon as administrators had found out about what had happened.

The 10-year-old student reportedly told his babysitter after school that the teacher had actually bound his wrists “to prove a point.”

The babysitter called police after finding marks on the boy’s wrist.

The boy’s parents decided not to file criminal charges against the teacher, Naperville police said.

In a statement to the Naperville Sun, District 204 spokeswoman Janet Buglio said the boy had applied duct tape to his own wrists while sitting at his desk, while the teacher watched.

“The substitute was immediately removed from the classroom as soon as the school’s administrator learned of the incident,” Buglio wrote “This substitute has worked in District 204 since 2000 without previous incident. District 204 has taken steps to ensure the substitute will not work again in any of its schools.”

Neither Buglio nor Naperville police Sgt. Gregg Bell would identify the teacher.

The Naperville Sun contributed to this report, via the Sun-Times Media Wire.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)