D.A. Tom Hogan said that 26-year-old Derek J. Smith has been arrested and charged with first-degree murder in the death of Steve Washington.
The shooting happened around 6:50 p.m. on Monday at the family home at 201 Seltzer Avenue in Caln Township.
Police responded to the area for a report of a shooting and found Washington with multiple gunshot wounds. He was pronounced dead at the scene.
Investigators say the shooting stemmed from an argument between father and son.
In a statement, Hogan said "This was a family argument. At worst, it should have ended with bruised feelings. Instead, a father is dead and a son has been arrested for murder."
Smith was arrested immediately. Along with murder he is also charged with weapons offenses.