Dane County Sheriff Dave Mahoney said Wednesday that detectives are searching for a Charter Arms Pink Lady Undercover Lite .38 caliber revolver taken from Cheryl Gilberg's home in Mazomanie.
The 43-year-old Gilberg was shot to death on Feb. 23. Mahoney says a 39-year-old Janesville man being held on unrelated charges in Rock County is the suspect. The man was called a person of interest last week.
Detectives want to talk to anyone who saw a black SUV parked along Highway 14 between Mazomanie and Middleton on Feb. 23.
The Wisconsin State Journal reports snowmobilers have been asked to be on the lookout for any potential evidence as trails reopen.