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From 'lol' to bomb-making boasts, new details in Boston Marathon court papers

A photo attached to the criminal complaint shows fireworks recovered from a backpack.

Criminal complaints against three college friends of Boston bombing suspect Dzhokhar Tsarnaev contain new details about the case:

  •  A month before the April 15 attack on the Boston Marathon, Dzhokhar Tsarnaev told college friends Azamat Tazhayakov and Dias Kadyrbayev over a meal that he "knew how to make a bomb," Tazhayakov said.
  •  When Kadyrbaev texted Tsarnaev on April 18 to say that he looked like one of the suspects in video just released by the FBI, the 19-year-old responded with messages including: "lol," "you better not text me" and "come to my room and take whatever you want."
  •  Among the items Tazhayakov, Kadyrbayev and Robel Phillipos say they found in Tsarnaev's dorm room was Vaseline, which Kadyrbayev said he believed was used to "make bombs."
  •  At a New Bedford, Mass., landfill, the FBI recovered the backpack containing the fireworks, the Vaseline and an assignment sheet from a University of Massachusetts class Tsarnaev was taking.