LUFKIN (KYTX) - A Lufkin teacher discovers bruises on her students' arm and calls police.
They tell us it was child abuse.
The girl told investigators that 33-year-old Cesar Alba got mad at her for arguing with her sister.
She said he dragged her by the hair and twisted her arm.
Family members said Alba was the girl's mom's live-in boyfriend.
He was arrested and charged with injury to a child.