(FILES) This file photo taken on December 10, 2016 shows Turkish police officers and forensic work next to damaged police vehicles and cars on the site where a car bomb exploded near the stadium of football club Besiktas in central Istanbul. Turkey marks one year since 46 people, mainly members of security forces, were killed in a bomb attack after a match outside the stadium of Istanbul football club Besiktas claimed by Kurdish militants. / AFP PHOTO / OZAN KOSE