A Chicago teacher faces dismissal after allegedly wrapping masking tape around a special education student to keep him in his chair when he wouldn't sit down, authorities said.

The teacher was told Wednesday not to report back to Medgar Evers School on the city's South Side, Chicago Public Schools spokesman Michael Vaughn said.

The teacher was in a classroom of four or five students on Tuesday when one 9-year-old boy would not sit down. The teacher restrained him with the tape, Vaughn said.

"There's no justification for that," Vaughn said. "If you need help, ask for help."

The student wiggled free after several minutes, Vaughn said. Three students reported the incident and police and the Illinois Department of Children and Family Services responded, Vaughn said.

Police interviewed the child at a relative's home and the case has been given to the special victims unit, Chicago police spokeswoman Monique Bond said.

"It appears the allegations will be substantiated and we will fire her," Vaughn said.

The unnamed teacher obtained her credentials last June, Vaughn said.