Matthew Hertgen

Matthew Hertgen was found not guilty by reason of insanity for the murder of his younger brother, Joseph Hertgen, who was stabbed and beaten with a golf club.

Man who killed brother and set cat on fire found dead in jail

Matthew Hertgen was found not guilty by reason of insanity for the murder of his brother while experiencing psychotic delusions. More

May 26, 2026

NJ man not guilty by reason of insanity for murdering brother, removing his eye

Matthew Hertgen was arrested after his younger brother, Joseph, was found beaten and stabbed with his right eyeball missing. More

March 18, 2026

Young male defendant in orange jail garb looks defeated. He has a bushy beard, too!

NJ Man Accused of Younger Brother’s Brutal Murder Appears in Court

Matthew Hertgen was in court on charges related to the deaths of his younger brother, Joseph Hertgen, and the family cat. More

March 6, 2025

Princeton man accused of murdering brother consents to detention

Matthew Hertgen is facing multiple charges, including first-degree murder, for the death of his younger brother, Joseph Hertgen. More