The reward has been increased for information in the death of a Chicago police officer killed one year ago.
$40,000 is now being offered for information on the death of Officer Clifton Lewis.
A year ago Saturday, Officer Lewis was fatally shot during an attempted robbery, while he was working as a security guard at a convenience store on 1201 N. Austin Blvd.
Two west-side men were charged with the crime, but police are still looking for the murder weapon, and at least one other person who was involved.
The additional reward money was raised by the Chicago Police Memorial Foundation and the Fraternal Order of Police.