A doormat lies outside the entrance of a flat in London February 26, 2015. Local media reported that the flat is the former home of Mohammed Emwazi. Investigators believe that the "Jihadi John" masked fighter who fronted Islamic State beheading videos is a British man named Mohammed Emwazi, two U.S. government sources said on Thursday. He was born in Kuwait and comes from a prosperous family in London, where he grew up and graduated with a computer programming degree, according to the Washington Post. REUTERS/Stefan Wermuth (BRITAIN - Tags: CRIME LAW CONFLICT TPX IMAGES OF THE DAY)