Police and fire officials search for the cause of a dramatic explosion in the northern Japanese city of Sapporo that collapsed a building and injured 42 people.

https://www.washingtonpost.com/video/world/authorities-search-for-cause-of-explosion-in-sapporo-japan/2018/12/17/0548b35b-7633-46e2-8564-e938907b4be6_video.html?noredirect=on&utm_term=.b0c63acfbbdb