Update 8:50 a.m.: Vatrell L. Knox was found in Chicago Monday morning by Chicago Police, according to the Highland Park Police Department.

He's in the process of getting reunited with his family.

Earlier:

A 12-year-old Highland Park boy with a history of running away from home went missing Sunday morning.

Vatrell L. Knox, described as 5'2'' and 95 pounds with black hair and brown eyes, left his home Sunday and hasn't been seen since, according to a news release issued by the Highland Park Police Department.

The release also said that Knox "has demonstrated a level of frustration with personal matters and has indicated that he may harm himself."

The Edgewood Middle School student ran away from home in February, and was found at the Navy Pier after an intense search that included help from North Shore and Chicago police officers, Highland Park volunteers and a helicopter. Knox knows how to use trains and buses to get around and has given fake information out in the past when questioned. He was last seen wearing a red hooded sweatshirt and white shoes.

Those with any information on Knox's whereabouts are encouraged to contact the Highland Park Police Department at 847-432-7730.