MINNEAPOLIS (WCCO) – Authorities say they have found the body of a 16-year-old boy with a medical condition who had been missing since Sunday morning.

The Mankato Police Department said William Wild was found dead in Riverfront Park along West Rock Street at about 9 p.m. Monday. He had been missing since 9 a.m. Sunday.

Police said they do not suspect foul play in the case, and it appeared Wild died as a result of a self-inflicted injury.

He was believed to have left on his own, and his family was concerned about a medical condition.

Authorities did not elaborate on the manner of death.