65 ILCS 5/9-2-31

Upon proof that any owner named in such petition, who has not been served with process, has ceased to own the described property since the filing of the petition, the court has the power, at any time, to impanel a jury and ascertain the just compensation to be made for that property, or the damage thereto, and the benefits thereto. Upon any finding or findings of the jury, or at any time during the course of the proceedings, the court may enter such order, rule, or judgment as the nature of the case may require.