There’s been another black eye for the transportation department at the South Bend Community School Corporation.

South Bend Police are part of an investigation with the Department of Child Services about accusations that a 9-year-old was assaulted by her school bus aide, according to the South Bend Tribune.

The student’s mom, Zoe Randle, says it all happened Wednesday when she said got a call from Nuner Primary, alerting her that a bus aide had assaulted her child on the bus at dismissal.

The fourth-grader suffers from chromosome disorder, seizures, is legally blind and has other infirmities including a speech impairment.

The employee is on leave pending the investigation. This follows two instances of children who were left on a bus in the last several weeks.