MADISON, Wis. (WITI) -- Criminal charges were filed Friday, March 20, in the murder of Brittany Zimmermann. David Kahl, 53, has been charged in Dane County Circuit Court with first-degree intentional homicide (as party to a crime by use of a dangerous weapon).
Brittany Zimmermann was killed on April 2, 2008, in her downtown Madison apartment. She was stabbed to death. Zimmerman was a 21-year-old University of Wisconsin-Madison student majoring in medical microbiology and immunology. She lived with her fiancé on West Doty Street.
Kahl was one of hundreds of people police interviewed in the first days of the investigation, telling investigators he had gone door to door in the neighborhood where Zimmermann lived, trying to scam residents out of money to buy crack cocaine. Police said at the time that he was not a suspect, the Wisconsin State Journal reports. Six years later, police found DNA matching Kahl on some of Zimmermann's clothes, the Journal reports.