The Cook County Medical Examiner's Office released Michael Scott's autopsy results Monday. Police officers who rushed to the Chicago River early Monday in response to a report of a body being spotted found Scott dead.
Family members say they appreciate the outpouring of support and a public memorial service will be announced soon.
Scott was a longtime Chicago leader who served on the Chicago 2016 Olympic Committee. In August, Scott said he'd been subpoenaed to testify before a federal grand jury investigating allegations of politically influenced admissions to top schools.
Gov. Pat Quinn says it's "a very sad day for Illinois."
(This version CORRECTS APNewsNow. UPDATES throughout with autopsy results, statement from governor Quinn, background on schools investigation, corrects that family statement did not say body was found in the river.)