CHEYENNE, Wyo. (AP) - A Cheyenne woman has pleaded not guilty to a misdemeanor charge alleging mistreatment of her nephew, an autistic man authorities say was left locked in a basement room covered in his own waste.

The Wyoming Tribune Eagle reports that 64-year-old Marcia Morris faces a charge of reckless abuse, neglect or abandonment of a vulnerable adult.

Documents filed in Laramie County Circuit court allege Morris failed to provide proper nutritional and hygienic care to her 22-year-old nephew.

Cheyenne Police officers responding to a disturbance call in November found the man, wearing a diaper and shorts, locked in a filthy basement at Morris' home.

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