-- Minutes before midnight on New Year's Eve, a 16-year-old boy allegedly used a semi-automatic rifle owned by a family member to shoot and kill his parents, sister and a family friend inside the parents' home in a coastal city in southern New Jersey, the county prosecutor said.
The teen's brother and grandfather apparently escaped harm. They "thankfully left the home and came out OK," Gramiccioni said at a press conference Monday morning.
Police arrived on the scene shortly after receiving a call from inside the home about shots fired at 11:43 p.m. on Dec. 31, a statement from the prosecutor's office said.
The boy was arrested at the scene without incident, Gramiccioni said.
No possible motive was revealed.
"It’s a terribly tragic incident," Gramiccioni said.