Two people were killed and more than 100 others were injured this afternoon as two powerful explosions detonated in quick succession near the Boston Marathon finish line in Boston’s Back Bay section, transforming a scene of athletic celebration into bloody chaos.
When the smoke cleared, dozens of victims lay in the street, some unconscious, some grievously injured, including some whose limbs had been torn off by the blast. The dead included an 8-year-old boy, according to two law enforcement sources briefed on the investigation.
President Barack Obama vowed that whoever planted the explosives would be found and brought to justice.