Wis. Stat. § 302.14: Property of deceased inmates, parolees, probationers or persons on extended supervision, disposition.

When an inmate of a prison, a parolee of an institution, a person on extended supervision or a person on probation to the department dies leaving an estate, after paying all costs and obligations under ss. 301.32 and 301.325, of $150 or less in the trust of the warden, superintendent or secretary, the warden, superintendent or secretary shall try to determine whether or not the estate is to be probated. If probate proceedings are not commenced within 90 days, the warden, superintendent or secretary shall turn over the money or securities to the nearest of kin as evidenced by the records of the institution and the department.