Amateur video provided by Barstool Sports shows the police activity at the scene in Watertown Dzhokhar Tsarnaev was captured.
Prolonged, heavy gunfire can be heard as police and swat teams arrested the 19-year-old suspect. Tsarnaev remains in a "serious but stable" condition.
Among those terribly injured by the Boston marathon bombs was a dance instructor. Adrianne Haslet-Davis lost her foot in the explosion.
The mother of the two brothers suspected of carrying out the Boston bombings told ITV News they saw last year's race but are innocent.
Boston's marathon bombing suspect Dzohkhar Tsarnaev was charged with an offence that could lead to the death penalty, if he is found guilty.