BOSTON (Reuters) - Two simultaneous explosions ripped through the crowd at the finish line of the Boston Marathon on Monday, killing two people and injuring dozens on a day when tens of thousands of people pack the streets to watch the world famous race.
Runners were heading for the finish when a fireball and smoke rose from behind cheering spectators and a row of flags representing the countries of participants, video from the scene showed. Other pictures showed blood stains on the ground and several people knocked down.