About 24 hours before the arrest of Boston bombing suspect Dzhokhar Tsarnaev, a violent gun battle took place with police on the streets of Watertown, Boston - where the two brothers are said to have also tossed a pressure cooker bomb at authorities.
The Tsarnaev brothers used the same weapon during the marathon bombings.
Tonight in an OutFront Investigation, our David Mattingly learns just how easy it is to build and detonate one of these deadly weapons.
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Erin Burnett OutFront airs weeknights at 7 p.m. ET. Designed to showcase Erin's unique style--casual, smart, and confident--OutFront stays ahead of the headlines, delivering a show that's in-depth and informative.
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