MONROE TWP. — Joseph I. Zambuto, 34, of Williamstown, has been charged with the fatal stabbing of his 70-year-old father during an argument in the suspect’s Meade Court home early Monday afternoon.

Zambuto was arrested at his home shortly after the death of his father, also named Joseph.  The elder Zambuto lived with his wife in a home next door to his son. The younger Zambuto owns both homes.

The suspect is charged with murder, possession of a weapon for an unlawful purpose and unlawful possession of a weapon.  According to the complaint signed against him, the weapon was a “Rambo 3” knife.

Zambuto, a stock trader, is being held in default of $1 million bail. He lived with a girlfriend and their 1-year-old child.

An autopsy conducted by the Gloucester County Medical examiner’s office today determined the cause of death was a knife wound to the chest and the manner of death was homicide.