Unsolved 1979 slaying in Illinois linked to suspected serial killer, authorities say NBC NewsDNA helps Illinois police make breakthrough in 1970s cold case murder of 19-year-old Fox NewsAccused serial killer Bruce Lindahl ID’d as suspect in 1979 cold case murder: Police ABC NewsNorth Aurora 1979 murder of Kathy Halle linked to serial killer Bruce Lindahl ABC7 ChicagoForty-five years later, new DNA testing methods help solve area murder WspyNews