LAFAYETTE, Ind. (AP) — Prosecutors are looking to file four additional charges against an Indiana couple accused of abandoning their adopted daughter.

According to the Journal and Carrier, Michael and Kristine Barnett were charged in September with two counts of neglect of a dependent, and now possibly face six to 20 years in prison if convicted.

If the prosecutors’ proposed new charges are allowed, the felony will move to a Class B felony. Tippecanoe Superior 2 Judge Steve Meyers is set to hear arguments on Dec. 27.