UPDATE: Detectives have now charged a man with the murder of his father at Maryland.
The 21 year old will face Newcastle Local Court today.
Police say the pair had been arguing yesterday afternoon, before the son allegedly stabbed his father in their neighbour's front yard in Delray Court.
EARLIER: Residents of a quiet cul-de-sac in Maryland have been left in shock after a man was fatally stabbed, allegedly at the hands of his own son.
Police were called to a home in Delray Court just after 9pm Wednesday night, where they found the 52-year-old man suffering numerous stab wounds to his stomach amd chest.
Sadly the man couldn't be revived.
Police called in the dog unit to search the area, where they found the man's 21-year-old son nearby.
He's now being questioned at Waratah Police Station.