Complex sentence: David Anthony Durham, who had been pulled over in a routine traffic stop by a Lincoln City, Oregon policeman on the night of 23 January 2011, suddenly shot the officer and fled in his SUV.
Split into simpler sentences: David Anthony Durham, is a missing person who had been pulled over in a routine traffic stop by a Lincoln City, Oregon policeman on the night of 23 January 2011. Durham had suddenly shot the officer and fled in his SUV.