The claim argues the FBI has given “no viable justification” to account for shooting and killing Todashev during a 2013 interrogation in Todashev’s apartment in Orlando, Florida.
The interrogation occurred about a month after the Boston Marathon bombings and centered around another crime linked to bombing suspect Tsarnaev: a 2011 triple homicide in Waltham, Massachusetts.
Todashev admitted to his direct role in slashing three people’s throats in Waltham and said Tsarnaev was involved as well, a federal law enforcement official told CNN in 2013. It was during that interview that Todashev was shot dead.
“It would seem almost superhuman, but everything that we have learned in the investigation would show an individual who has a great deal of tolerance of pain and would more or less fight beyond it.
“It seemed to me that if the goal was to get away, he could have gone out that back door and gotten away instead of going towards the officers.”
CNN’s Susan Candiotti, Evan Perez, Phil Black and Carol Cratty contributed to this report.