DNA found on bodies of two women matched to Ellis , police say . Walter E. Ellis charged in nine killings and more charges likely , police say . Ellis has been charged at least 10 times with varying offenses ranging from violent crimes to property crimes between 1981 and 1998 , though some of the charges were dismissed , online court records in Wisconsin show . Police chief hails arrest : `` This case was solved with shoe leather and science '' The women were killed April 2007 .
DNA found on bodies of two women matched to Ellis , police say . Walter E. Ellis charged in nine killings and more charges likely , police say . Police chief hails arrest : `` This case was solved with shoe leather and science '' The women were killed April 2007 .