A man has been arrested and was charged with manslaughter after he allegedly admitted to killing his sister when they got into an argument about how loud her music was. Giuseppe Musella has been accused of stabbing his 22-year-old sister, Jlenia Musella, in Naples in southern Italy on Tuesday, February 3, according to L'Unione Sarda, Rai News and Il Mattino. The outlets cited the Naples Prosecutor's Office and investigators from the Naples Flying Squad, which is a specialized unit of the Italian state police.