Complex sentence: Five bullets were fired from a rifle carried by Buíça (a former army sergeant), hidden under his long overcoat: three of these struck and killed the King, while another fatally wounded the heir to the throne Luis Filipe.
Split into simpler sentences: Five bullets were fired from a rifle carried by Buíça (a former army sergeant), hidden under his long overcoat. Three of these struck and murdered the king, while another fatally wounded the heir to the throne Luis Filipe.