Reports Of Shots Fired On The Dan Ryan

CHICAGO (CBS) -- More gunfire on a Chicago expressway.

But this time, Illinois State Police found no victim, no shooter but only shell casings.

It happened on the Dan Ryan near 75th around 4:30 Wednesday morning. ISP said Chicago police called after receiving a ShotSpotter report of gunfire.

Investigators found three casings. The 71st Street ramp was closed for about an hour.

There have been no arrests.

In:
• Shooting
• Dan Ryan
• Chicago Police Department
• Illinois State Police