A Vandalia man is going back to prison after assaulting a woman he met online.

26-year-old Zachary Williams pleaded guilty to armed robbery causing serious injury, assault with intent to do great bodily harm less than murder or by strangulation and unlawful driving away of an automobile.

He was sentenced to concurrent terms.

He was sentenced to 20 to 40 years for the robbery charge, 76 months to 10 years for the assault charge, and 38 months to five years for the unlawful driving away charge.

The assault happened in July.

The 23-year-old victim was taken to the hospital, where she stayed for 6 days.

Leader Publications reports that Williams is already on parole from an assault on a different victim in 2019.