DECATURVILLE, Tenn. (AP) — A court hearing is scheduled Tuesday in a dispute about an immunity agreement in the case of a Tennessee nursing student who disappeared three years ago.

According to court documents, a March 6 agreement granted Shayne Austin immunity from various charges, including "all charges arising out of the disposal, destruction, burial, and/or concealment of Holly Bobo's deceased body."

Prosecutors later revoked the agreement, saying Austin wasn't truthful with them. The court documents first obtained by The Jackson Sun indicate Austin could be charged.

Austin's lawyer has filed a breach of contract lawsuit.

Two other men have been charged with kidnapping and murder in the case.

Bobo was 20 when she disappeared from her family's rural home near Parsons on April 13, 2011. Investigators say her body has not been recovered.