Boston bombing suspect reveals details of attack to investigators.
(NBC News) The surviving suspect in the Boston Marathon attack has told investigators that he and his brother got instructions on building bombs from an online magazine published by al Qaeda, federal law enforcement officials told NBC News.
Dzhokhar Tsarnaev told investigators that the brothers read the instructions in Inspire, an online, English-language magazine that terror monitoring groups say al Qaeda began publishing in 2010.
The magazine has twice included articles on building bombs with kitchen pressure cookers - the method investigators say Tsarnaev and his brother, Tamerlan, used in the Boston attack.
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