A Chechen man who was fatally shot by an FBI agent last week during questioning about one of the Boston bombing suspects attacked the agent with a "long-weapon," a law enforcement source told Fox News.
The source did not clarify on what weapon was used. An earlier report from the Washington Post, citing other law enforcement officials who spoke on condition of anonymity, claimed Ibragim Todashev, 27, was unarmed when he attacked.
At the time of the May 22 shooting, Todashev was being interviewed about his possible connection to a triple murder in Waltham, Mass., on Sept. 11, 2011. Law enforcement officials said he had acknowledged involvement in the murders and had implicated Boston Marathon bombing suspect Tamerlan Tsarnaev. Todashev, a former Boston resident who knew Tsarnaev, was not suspected of involvement in the April 15 Boston bombing.
Todashev’s father, who lives in Chechnya, told the Daily Beast website following the shooting that he didn’t believe the FBI’s account of the incident.
“My son could never commit a crime, I know my son too well,” Abdul-Baki Todashev told the website. “He worked helping disabled people in America and did sports, coached other sportsmen. The FBI made up their accusations.”
The father said his son was killed "execution-style," the Associated Press reports.
FBI officials, in a statement released Wednesday, said the matter is being investigated by an internal review team.
“The FBI takes very seriously any shooting incidents involving our agents and as such we have an effective, time-tested process for addressing them internally,” FBI spokesman Paul Bresson said in a statement Wednesday. “The review process is thorough and objective and conducted as expeditiously as possible under the circumstances.”
An advocacy group is also demanding a civil rights investigation into Todashev’s death. A spokesman for the Council on American-Islamic Relations said Wednesday his group is asking the U.S. Department of Justice's civil rights division to open a probe into how Todashev died.
CAIR spokesman Hassan Shibly says he wants to know if excessive force was used or whether Todashev's rights were violated.
A medical examiner has ruled the death a homicide.
Meanwhile, the remaining suspect in the Boston Marathon bombings has recovered enough to walk and assured his parents in a phone conversation that he and his slain brother were innocent, their mother told The Associated Press on Thursday.
Dzhokhar Tsarnaev, 19, walked without a wheelchair to speak to his mother last week for the first and only phone conversation they have had since he has been in custody, Zubeidat Tsarnaeva told the AP.
In a rare glimpse at Dzhokhar Tsarnaev's state of mind, he told her he was getting better and that he had a very good doctor, but was struggling to understand what happened, she said.
"He didn't hold back his emotions either, as if he were screaming to the whole world: What is this? What's happening?," she said.
The April 15 bombings killed three people and wounded more than 260. The elder brother, 26-year-old Tamerlan Tsarnaev, was killed in a shootout with police, and Dzhokhar remains in a prison hospital after being badly wounded.
"I could just feel that he was being driven crazy by the unfairness that happened to us, that they killed our innocent Tamerlan," their mother said, standing by the family's insistent belief that their children are innocent.
The Tsarnaevs met the AP in their new apartment in a 14-story building in a well-to-do area of Makhachkala, the capital of the restive Caucasus province of Dagestan. The apartment had no furniture apart from a TV, a few rugs, and wallpaper materials lying on the floor.
Anzor Tsarnaev, the suspects' father, said they had bought it for Tamerlan, his wife, and their young daughter in the expectation that they would move to Makhachkala later this year. He added that they planned to turn their old home in a dingy district on the outskirts of town into a dentist's office, so that Dzhokhar, a dental hygiene student, could work out of it after completing his studies.
"All I can do is pray to God and hope that one day fairness will win out, our children will be cleared, and we will at least get Dzhokhar back, crippled, but at least alive," Tsarnaev said.
The Associated Press contributed to this report.