DENVER — A Denver Public Schools bus driver is being accused by the guardians of an autistic boy of tying the 3-year-old to his seat, 7News reports.

One of the guardians, LaKesha Rouse, told the news outlet the boy learned how to unbuckle the harness that buckles into his safety seat and there is supposed to be an aide on the bus to help if that happens. Instead, Kathy Griffin, his other guardian, claimed he was tied to the bus with ropes and belts to keep him in the harness, according to 7News.

A district spokesperson confirmed to the news outlet that the driver “was using an unapproved seat belt-like device to keep a student in their safety seat." The district is investigating the incident and the bus driver has been placed on administrative leave, according to 7News.

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