The St. Johns County Sheriff's Office released 20-year-old Arthur Charles Wagner III picture Monday in hopes the public may have any information on his whereabouts.
Wagner was last seen Saturday on a yellow dirt bike near Wildwood Drive, according to detectives.
Family members told police Wagner is despondent and recently made threats to harm himself.
Police are asking anyone with information on where Wagner is to contact Detective J. Cook at the St. Johns County Sheriff’s Office at (904) 824-8304 or by email at jcook@sjso.org.