The preppy Princeton, New Jersey man who allegedly murdered his younger brother and butchered the family feline inside their luxury apartment posed with an $8 cat toy the day before the gruesome ...

Matthew posted a bizarre Facebook photo of himself with a $7.99 cat toy just one day before the rampage. In the un-captioned image, he sports a far-off star in his eyes and a shaggy beard.

Matthew allegedly killed his younger brother, 26-year-old Joseph Hertgen, and is now facing various charges including first-degree murder, several weapons charges and one count of animal cruelty.

Matthew Hertgen, 31, said nothing during the brief videoconference hearing — during which his defense attorney asked for a week-long delay to prepare and review the discovery.

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 ...

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.

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

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 ...

Matthew Hertgen is accused in the murder of his 26-year-old brother, Joe Hertgen, who lived at an apartment complex in downtown Princeton. Joe Hertgen played soccer for the University of Michigan.

Matthew Hertgen/Facebook The brothers came from a wealthy family, who moved from a $1.1 million home in Toms River to ritzy Princeton. “It’s incredibly tragic.

Matthew Hertgen is accused in the murder of his 26-year-old brother, Joe Hertgen, who lived at an apartment complex in downtown Princeton. Joe Hertgen played soccer for the University of Michigan.

Matthew Hertgen is accused in the murder of his 26-year-old brother, Joe Hertgen, who lived at an apartment complex in downtown Princeton. Joe Hertgen played soccer for the University of Michigan.