A preschool worker has been charged with aggravated child abuse for allegedly striking a 3-year-old girl in the head with a chair at a day care center, investigators say.

Cameron Hunter, 22, of August Way in Shelbyville was arrested Wednesday by the Bedford County Sheriff’s Office.

Hunter allegedly threw a child-sized plastic chair with metal legs at the girl earlier in the day Wednesday at Stay-N-Play Child Care, Wartrace-Bell Buckle Road, Chief Deputy Nikia Elliott said.

Deputies talked to the girl’s family later in the day and said swelling and bruising were visible.

“Cameron Hunter was watching a group of children playing,” Elliott said, also quoting information from Deputy David Burns and Sgt. Savannah Martin, who investigates child abuse-related incidents.

“Security video showed Hunter sitting in a chair while the child was playing along with other children who were some distance away. She (Hunter) got up, grabbed another chair and tossed it at the child,” Elliott said.

The girl did not appear to be acting out of the ordinary for a 3-year-old, said Elliott, who has watched the video. No sound is on the video, and Elliott was uncertain if Hunter said anything to the girl before throwing the chair.

Nothing was apparent in the video that would have caused Hunter to lose her temper, Elliott said.

Law enforcement was notified by the center’s owner.

Hunter’s bond was set at $10,000.