Matthew Hertgen listens to his attorney Jason Matey during a detention hearing in Mercer County Superior Court in Trenton on March 6, 2025. He is accused of killing his brother in Princeton.

Matthew Hertgen, 31, is accused of using a knife and a golf club to murder his 26-year-old brother Joseph in the family's Princeton, New Jersey, apartment on February 22.

The Princeton man charged with killing his brother voluntarily agreed on Thursday to remain in jail pending court appearances in his case. Matthew Hertgen, 31, is charged with first-degree murder ...

On Feb. 22, Matthew Hertgen, 31, called 911 to report a “fire and a dead body” inside his residence, the affidavit says.

Matthew Hertgen, 31, is accused of murdering his 26-year-old brother, Joseph Hertgen, in the family's Princeton apartment, allegedly with a knife and golf club. He is also charged with animal ...

Matthew Hertgen said he fell into a “fit of madness” the night his brother’s beaten body and the burnt remains their cat were found inside an apartment near Princeton University.

Matthew Hertgen was in a “fit of madness” and experiencing “terrifying visions” when he allegedly murdered his younger brother in his Princeton, New Jersey, apartment.

Matthew Hertgen, 31, is accused of murdering his 26-year-old brother, Joseph Hertgen, in the family's Princeton apartment, allegedly with a knife and golf club. He is also charged with animal ...

Matthew Hertgen, 31, is facing multiple charges, including first-degree murder for the death of Joseph Hertgen, 26. According ...

Joe Hertgen responded with "will do" and invited the brother to a hike the next day around 10:30 p.m. About 45 minutes later, Matthew called 911 and reported Joe dead, telling police he "went into ...