A young German co-pilot locked himself alone in the cockpit of Germanwings flight 9525 and set it on course to crash into an Alpine mountain, killing all 150 people on board including himself, prosecutors said on Thursday.
The bombs that tore through the crowd at the Boston Marathon in a deadly 2013 attack were powered by flash powder used in fireworks, an FBI chemist said on Thursday as prosecutors move toward the end of their case.
The International Committee of the Red Cross (ICRC) has called on all sides in a widening conflict in Yemen to obey the rules of war, voicing concern at reports of civilian casualties following Saudi-led air strikes.