Oct 23, 2013 — Tamerlan Tsarnaev died after a gun battle with police. A friend, who's also now dead, told investigators that Tsarnaev was involved in a 2011 triple murder. Tsarnaev and his brother Dzhokhar are the lone suspects in last April's bombings at the Boston Marathon.
May 23, 2013 — Ibragim Todashev, law enforcement sources tell NPR and other news outlets, was being questioned about the 2011 killings of three men in Waltham, Mass. Boston bombings suspect Tamerlan Tsarnaev has also been linked to that unsolved case.
May 22, 2013 — A friend of the man killed Wednesday in Orlando says the FBI was questioning the man about his connection to Tamerlan Tsarnaev, one of the men suspected of planting the bombs in Boston.