Two bombs exploded near the finish line of the Boston Marathon killing 3 people and more than 130 injured.
Five other unexploded bombs have been reportedly found since then. It was the 117th edition of the 26.2-mile race and the explosion happened near the time when the bulk of the runners were about to cross the finish line.
The first explosion occurred just before 3PM (local time) near the finish line on Boylston Street where at least 4,500 of the 23,326 athletes were completing the marathon.
The second explosion happened 13 seconds later further down Boylston Street near where it crosses with Ring Road.
A third bomb was later found on Dartmouth Street and destroyed by police. At least one other device was found and dismantled by authorities.
So who is responsible for this “attack”? Who did it?
As of posting, US President Barack Obama said authorities don’t yet know who is behind the tragedy but warned that those responsible will be tracked down and “will feel the full weight of justice.”
“Any event with multiple explosive devices — as this appears to be — is clearly an act of terror, and will be approached as an act of terror,â€ one federal official said. â€œHowever, we don’t yet know who carried out this attack, and a thorough investigation will have to determine whether it was planned and carried out by a terrorist group, foreign or domestic.” a federal official said.