Where is Aaron Schock? An attorney for a campaign donor suing the former Illinois congressman has told a federal judge he can't locate the Republican who resigned in March amid questions about his spending.

Daniel Kurowski filed the lawsuit April 15 for Chicagoan Howard Foster. Foster donated $500 to Schock's campaign and wants him to repay millions of campaign dollars on grounds the Peoria politician tricked contributors into believing him.

The Chicago Sun-Times reports (http://bit.ly/1JbTV8C ) Kurowski told a hearing in Chicago Wednesday he hasn't been able to inform Schock about the lawsuit. Kurowski tried a Peoria address for Schock, but the property is now vacant.

Amid media scrutiny, Schock quit in March and a federal criminal investigation began.

An email message seeking comment Thursday from a Schock spokesman wasn't returned.