Thomas Menino, Elizabeth Warren, Deval Patrick, Richard DesLauriers
Boston Mayor Thomas Menino, below, reacts as he and U.S. Sen. Elizabeth Warren, far left, and Mass. Gov. Deval Patrick, center, listen to FBI Special Agent in Charge Richard DesLauriers, far right, speak during a news conference in Boston Tuesday, April 16, 2013 regarding two bombs which exploded in the street near the finish line of the Boston Marathon on Monday, killing at least three people and injuring more than 140. (AP Photo/Elise Amendola)
Runners continue to run in the Boston Marathon as an explosion erupts near the finish line of the race in this photo exclusively licensed to Reuters by photographer Dan Lampariello on Monday.