73-Year-Old Man Charged With Murder After Wife Found Stabbed to Death at NJ Home Dieter Zimmermann used a kitchen knife to kill his wife, authorities said, but it was not yet clear what sparked the deadly dispute or if anyone else was in the home at the time of the incident Published January 13, 2021 • Updated on January 13, 2021 at 10:48 pm Getty Images A man faces murder charges after his wife was found stabbed to death in a bathroom at their northern New Jersey townhome. Dieter Zimmermann, 73, of Mahwah, also faces weapons charges stemming from the death of 69-year-old Jaquelin Zimmerman, according to the Bergen County Prosecutor’s Office. Police found her body on a bathroom floor when they responded to the home around 8 a.m. Tuesday for a reported domestic violence incident.