Han was indicted last week on four counts of making false statements, each of which carries up to five years in prison. He was set to be arraigned Tuesday in Des Moines, but he didn't show up due to an apparent paperwork mix-up. A prosecutor said Han will be given another chance to appear next week.

Han, 57, didn't return a message left at his home in Cleveland, where he's been living since resigning from the university last fall. A native of South Korea, he surrendered his passport following his arrest and initial court appearance in Ohio last week.