(JTA) — A man being questioned for his connection to the Tsarnaev brothers and a triple homicide was killed after he attacked an FBI agent with a knife.

Ibragim Todashev, a Chechan man who was living in Orlando, Florida, was being questioned in connection with a triple homicide in which Tamerlan Tsarnaev was suspected of being involved, according to reports.

Tamerlan Tsarnaev was killed in a shootout with police several days after the Boston Marathon bombing, which he is accused of planning and carrying out with the help of his younger brother.
The three murders, committed in Waltham, Mass. are considered among the more violent acts in the Boston area in recent history.

Three men — Brendan Mess, Rafael Teken and Erik Weissman — were found dead on the evening of Sept. 11, 2011 in an apartment several miles from the campus of Brandeis University. The bodies of the three men were discovered with their throats slit and about seven pounds of marijuana dumped on the bodies, as well as $5,000 in cash left behind.

Two of the victims, Weissman and Teken, were Jewish.

Tamerlan Tsarnaev knew Mess well but did not attend his funeral despite once referring to him as his “best friend,” and participating in boxing and martial arts training together.

Tamerlan Tsarnaev’s mother has acknowledged that her son and Todashev were friends and saw each other frequently when both were in Boston.