The Princeton man charged with the beating death of his brother last weekend left a bloody scene and told arresting police officers he went into a “fit of madness,” a detective wrote in court papers.
Matthew Hertgen, 31, is charged with first-degree murder and related weapon possession charges in the death of Joseph Hertgen, 26.
The Mercer County Prosecutor’s Office has said the older Hertgen used a golf club and knife in the Feb. 22 crime.
