Explain Creon's new plan for Antigone's punishment and infer the cause of the change.

He knew that if he ordered Antigone to be publicly executed, people would rise up against him. His son and family were all against his former decision to have Antigone killed for her insurgence, therefore he decided to practically lock her inside a tomb somewhere far from the city and send enough food to her so that she wouldn't starve to death. However, his plan was thwarted as Antigone killed herself first.