Port Pirie boy, 12, accused of throwing rocks, carrying hammer and baseball bat A TWELVE-year-old Port Pirie boy who allegedly threw rocks at two people while armed with a baseball bat and claw hammer has been charged with assault. Police arrested the boy over an incident at Threadgold Park at Port Pirie around 5pm Tuesday. It is alleged the boy threw rocks at two people then approached them carrying a baseball bat and hammer. The alleged victims were not injured and the boy has been charged with two counts of aggravated assault and carrying offensive weapons. He was granted bail to appear in the Port Pirie Youth Court on September 11.