Case overview
The bombs detonated seconds apart on Boylston Street as runners were approaching the finish of the 117th Boston Marathon. The devices had been packed with shrapnel and left among spectators. Emergency workers and bystanders treated a mass-casualty scene while investigators began collecting physical evidence and thousands of photographs and videos. [1]
After the FBI released images of the suspects, the brothers killed MIT Police Officer Sean Collier, carjacked a vehicle and exchanged gunfire with police in Watertown. Tamerlan Tsarnaev died from injuries sustained during the confrontation. Dzhokhar Tsarnaev was found hiding in a boat the following evening. His convictions remain in place; litigation over his death sentence continued after a 2024 appeals-court order concerning possible juror bias. [2]
