Jonathan J. Van Duyn, 33, and Jocelyn T. Van Duyn, 10. | Provided photo.

An Amber Alert has been activated for a missing 10-year-old from Walworth County, Wisconsin who also has ties to the Wonder Lake area, authorities said.

Jocelyn T. Van Duyn, 10, was last seen around 8 p.m. Saturday at her mother’s home in the 200 block of Fox Lane in Walworth, Wisconsin.

Jocelyn did not pack a bag or take a jacket and authorities believe she may be traveling with her biological father.

Authorities activated the Amber Alert around 9:15 p.m. Monday.

Police listed Jonathan J. Van Duyn, 33, as the suspect in the case and said he drives a white 2014 Dodge Ram truck that might be pulling a camper. The license plate has an Illinois registration tag of 167007F.

Van Duyn also goes by the nicknames “Kyle” and “Wolfy.” He is a white male, 6-feet tall, 220 pounds, with very short brown hair and blue eyes.

[Suggested Article]  Wadsworth man ordered detained in Lake County Jail after firing gun, leading police on high-speed chase in Waukegan

Jocelyn is a female white, 5-foot-3, 140 pounds, with brown hair and hazel eyes. She was last seen wearing a white t-shirt with the Eiffel Tower on it, black pants and dark shoes.

Jocelyn is originally from Wonder Lake and goes to school in McHenry. Her grandparents live in McHenry County.

Anyone with information is asked to call 911 or the Wisconsin Department of Justice at 800-674-9228.