Police evacuated the block surrounding the Boston Marathon finish line Tuesday after a man dropped two bags in the area.
As a precaution, a bomb squad detonated the bags after using a remote-controlled robot to examine one. It is currently unclear what was inside the backpacks. Police took the man into custody.
The threat comes on the anniversary of the Boston Marathon bombings that killed three people.
Photo: A backpack that was left unattended Tuesday on Boylston Street at the finish line of the Boston Marathon. (WBZ-TV via Reuters)