Stephen Pirages

DNA testing is one method that has received the most attention in helping cold case investigations.  Fingerprint technology has also increased.  Automated identification systems and systems that use lasers to lift prints aid investigators as well.  Although forensic analysis and investigative techniques have greatly improved over the years the resolution of cold cases is primarily rooted in a squad’s ability to identify, locate and secure the testimony and cooperation of witnesses and informants.

When opening a cold case, investigators must consider the quality of evidence and availability of witnesses.  Often times just locating a witness can be challenging.  Cold cases are very labor intensive and may require innovative investigative techniques.  Investigators usually start by reviewing the case file and talking with all previous investigators tied to the case.  Any available evidence is assessed for future usability and additional analysis.

The U.S. Department of Justice, Bureau of Justice Assistance reports a benefit of a cold case squad in addition to clearing unsolved murders is developing leads which may solve other crimes and prevent additional murders.  Since our first “cold case” in 1966, there have been 125 homicides. Of those, only 12 remain unsolved. The nearly 90% solve rate has netted 140 arrests.   A cold case squad’s success in even one case can lead to positive feedback from a family that had been frustrated by law enforcement’s previous inability to solve the death of a loved one.  If you have any information involving the following “cold cases” please contact the Detective Bureau at 815-319-6400.  Current cold cases under review by the Winnebago County Sheriff’s Office include:

Anyone with information about these cases is encouraged to contact the Winnebago County Sheriff’s Office Detective Bureau at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it or Rockford Area Crime Stoppers office at 815-963-7867/888-769-STOP(7867).