The Independent Commission Against Corruption intensified its Operation Rosny hearings today, examining alleged ties between senior political figures, fugitive property developer Jean Nassif, and Catholic Schools NSW.

Anita Perrottet returned to the witness box this morning to resume her evidence, with her husband, Charles Perrottet, scheduled to front the commission later in the day.

The high-stakes integrity inquiry is systematically untangling private developer influence across public institutions, with Nassif slated to give evidence next week.