![Tamerlan Tsarnaev, 26.](https://pyxis.nohib.com/v1/imgs/8f1/a96/3edbed4d7f12384f183387196d1e45db91-22-tamerlan-tsarnaev-2.rvertical.w330.jpg)
Ibragim Todashev told authorities that his friend Tamerlan Tsarnaev was involved in a triple murder in Waltham, Mass. in Sept. 2011, according to a motion filed by federal prosecutors in the case of alleged Boston Marathon bomber Dzhokhar Tsarnaev. Law enforcement sources said in May that Todashev was about to give a statement implicating Tsarnaev when he was killed by FBI agents, so this confirms that bit of the story. Everything else about the circumstances of Todashev’s death remains unclear.