The bells will toll Thursday for Brittany Zimmermann, UW-Madison student murdered on April 2, 2008.
University officials will conduct a memorial ceremony for Zimmermann on Thursday, with the carillon tower bells ringing 21 times, one ring for each of her 21 years, at 12:20 p.m., the approximate time of her death.
The bell tower is on campus at 1160 Observatory Drive.