North Aurora police say they now know who killed Kathy Halle in 1979. The woman's body was found in the Fox River.They say DNA evidence has identified Bruce Lindahl as the perpetrator. Lindahl, who died in 1981, has been tied to the murder of a Woodridge teen in 1976 and suspected in several other murders of young women in DuPage, Kane and Kendall counties in the 1970s.Police officials and Kane County State’s Attorney Jamie Mosser will talk about how authorities solved the Halle case during a news conference on Wednesday afternoon.Halle disappeared on March 29, 1979, after leaving her apartment to pick up her sister from work. Her car was found in the apartment parking lot, with a large pool of blood on the floor behind the driver’s seat, according to Chicago Tribune news articles at the time.For more on this story, go to Dailyherald.com.