Two homemade bombs exploded near the finish line of the Boston Marathon, causing multiple casualties and injuries.
Authorities launched a massive manhunt for the bombing suspects, leading to a city-wide lockdown and intense law enforcement activity.
The second suspect, Dzhokhar Tsarnaev, was captured in a boat in a backyard in Watertown after a day-long search.
The annual Boston Marathon begins with thousands of runners participating in the event.
Two bombs explode near the finish line of the Boston Marathon, causing multiple casualties and chaos.
First responders, including police and medical teams, rush to treat victims and evacuate the area around the explosion site.
Authorities identify the Tsarnaev brothers as prime suspects in the bombing based on evidence gathered.
During a confrontation at MIT, the suspects kill police officer Sean Collier and escape, prompting a city-wide manhunt.
Boston goes into lockdown as police surround the area and search for the suspects intensively.
In a shootout in Watertown, the older brother is killed and Dzhokhar Tsarnaev is captured after hiding in a boat.
The city begins recovery efforts and honors the victims, with a strong sense of unity and resilience shown by the community.
