CHICAGO — The Illinois Supreme Court has suspended a former city of Chicago lawyer accused of withholding information in a civil case related to the fatal 2011 police shooting of an unarmed black man.

The Chicago Tribune reports that Jordan Marsh’s 90-day suspension comes after the Illinois Attorney Registration and Disciplinary Commission determined he made a significant error after learning about the possible existence of a radio call connected to the Darius Pinex shooting.

The shooting happened during a traffic stop.

Two police officers claimed to hear a radio call describing the vehicle driven by Pinex as one used in a shooting. The officers didn’t hear the dispatch, which was aired in a different radio zone.

The city settled the civil case last year for $3 million.

Marsh is now in private practice. His suspension starts next month.

Information from: Chicago Tribune,