Complex sentence: On August 5,1996, an armed gunman attempted to rob an armored vehicle inside the mall, during the shootout, the gunman and a 17 year old youth were killed on the scene.
Split into simpler sentences: On August 5,1996, an armed gunman attempted to rob an armored vehicle inside the mall. During the shootout, the gunman and a 17-year-old youth were killed on the scene.