Crime scene, Knife attack at London Underground, 犯罪現場, 倫敦地鐵持刀行凶

Police officers investigate a crime scene at Leytonstone underground station in east London, Britain December 6, 2015. (REUTERS/Neil Hall)
Knife attack at London Underground
http://news.yahoo.com/photos/knife-attack-at-london-underground-slideshow/police-officers-investigate-crime-scene-leytonstone-underground-station-photo-004247601.html