A marathon runner, wrapped in a blanket to stay warm after the race, watched Monday as authorities investigated the bombings that shook the finish line area at the Boston Marathon. At least three people were killed and dozens were wounded.
Credit Nicolaus Czarnecki / Barcroft Media /Landov
FBI Special Agent in Charge Richard DesLauriers said that they believed the devices used in the attack may have been pressure-cooker bombs stuffed with BBs and nails. Investigators said the bombs may have been left inside nylon bags or backpacks.