(KTRS) Former U.S. Rep Aaron Schock’s executive assistant testified before a federal grand jury investigating allegations of improper spending by the onetime rising Republican star.

Sarah Rogers was in Springfield’s federal building for a total of five hours Wednesday. But her attorney, Bill Coffield, says she did not testify the entire time.

Prosecutors began reviewing Schock’s travel expenses and spending after reports surfaced that he had decorated his Capitol Hill office in the style of TV’s “Downton Abbey.”

The 34-year-old Peoria politician resigned in March amid a growing controversy.

An affidavit last week by a former Schock adviser – says Rogers handled travel and expense reimbursements.