Forty-five year-old Larry Murphy Jr. pleaded guilty to injury to a child.
He's sentenced to four years in prison.
An arrest affidavit states teachers at a Wichita Falls school became concerned when they saw red marks on the boy's face.
They say the child said Murphy hit him with a belt because of a bad mark he received in school.
Upon further investigation, CPS officials say they also found marks on the child's arms, neck, back, and chest.
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