On April 15, 2013, at approximately 2:49 PM EDT, two homemade pressure cooker bombs exploded near the finish line of the Boston Marathon. The attack killed 3 people and injured an estimated 264 others, many losing limbs.

The FBI launched an extensive investigation, releasing photos and videos of the suspects on April 18. A massive manhunt ensued, during which one suspect was killed and the other was captured on April 19, 2013, after a citywide lockdown of Boston and surrounding areas.