The Waupaca County Sheriff's Department has identified the man who was found dead in an apartment as Craig Paul Dake, 43, of Fremont.
Deputies say a 43-year-old woman is in custody for questioning in the Waupaca County Jail.
According to a press release from the department, the man was found dead at an apartment complex on the 300 block of Jefferson Street just before 3 a.m. March 6.
Investigators said the man was stabbed and the incident appears to be domestic. The woman is listed as the person of interest.
An autopsy is being conducted Saturday at the Fond du Lac County Medical Examiner's Office. Waupaca County Coroner Barry Tomaras has ruled the death as a homicide.