A southeast Ohio grandmother has been charged with child abuse for allegedly gagging an 11-year-old granddaughter with soiled men's underwear.

Sgt. Ed Downs of the Hocking County sheriff's office tells The Columbus Dispatch (http://bit.ly/1cAHiGC ) that it was "the most disgusting, heinous" case of child abuse he'd ever seen.

Downs says the 54-year-old New Straitsville woman was arrested Wednesday, after an older granddaughter secretly took cellphone video of the alleged abuse.

The video shows the woman forcing underwear soiled with feces into the 11-year-old's mouth and taping it there. When the girl vomited, her grandmother told her to swallow it.

The girl was being punished for stepping on the grandmother's injured foot.

The woman is being held with a $1 million bond on charges including kidnapping and endangering children.

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Information from: The Columbus Dispatch, http://www.dispatch.com