Dzhokhar Tsarnaev 's note condemned U.S. actions in Muslim countries and asked Allah to make him a martyr , terrorism expert Matthew Levitt said . Levitt said many of the lectures contained in Tsarnaev 's note are contained in lectures by Anwar al - Awlaki and writings in the al - Qaida publication Inspire . Both the lectures and writings were found on Tsarnaev 's note . One Inspire article shown to the jury concerning pressure cookers was called ' Make a Bomb in the Kitchen of Your Mom ' Two pressure - cooker bombs were planted by him and his older brother , Tamerlan , near the finish line of the 2013 Boston Marathon . Three people were killed and more than 260 were injured .
Dzhokhar Tsarnaev 's note condemned U.S. actions in Muslim countries and asked Allah to make him a martyr , terrorism expert Matthew Levitt said . Levitt said many of the ideas included in Tsarnaev 's note are contained in lectures by Anwar al-Awlaki and writings in the al-Qaida publication Inspire . Both the lectures and writings were found on Tsarnaev 's computer . One Inspire article shown to the jury concerning pressure cookers was called 'Make a Bomb in the Kitchen of Your Mom ' Two pressure-cooker bombs were planted by Tsarnaev and his older brother , Tamerlan , near the finish line of the 2013 Boston Marathon . Three people were killed and more than 260 were injured .