Complex sentence: Mevlüt Altıntaş (24 June 1994--19 December 2016) was a Turkish police officer who was off-duty at the time of the killing.
Split into simpler sentences: Mevlüt Altıntaş (24 June 1994--19 December 2016) was a Turkish police officer. He was off-duty at the time of the killing.