MOSCOW, March 3 (RAPSI) - The Council on American-Islamic Relations Florida (CAIR-Florida) has formally announced its plan to sue FBI in the death of Ibragim Todashev who was killed during interrogation over his possible involvement in Boston Marathon bombings, Reuters reported on Monday.

CAIR filed a notice to the agency on behalf of Todashev’s parents who believe that FBI agents killed their son "in cold blood". CAIR spokesman Ali Kurnaz told press that "there are a lot of things that happened that day that we don't know ... there are things that don't add up" mentioning lack of evidence available to public, Reuters reported.

CAIR has also questioned the qualification of FBI agent on the scene, citing several lawsuits against him which involve accusations of police brutality, witnesses falsified police reports and allegations of beating suspects, Reuters reported.

Todashev, 27, a mixed martial arts fighter who had moved to the US from Russia's Chechen Republic several years earlier, was killed in his Orlando home on May 22, 2013 while being questioned about his links to deceased Boston Marathon bombing suspect Tamerlan Tsarnaev and a 2011 Massachusetts triple murder.

A relatively peaceful and productive interrogation abruptly gave way to what was perceived as an immediate threat of impalement by Todashev with a pole being deployed like a javelin, State Attorney Jeffrey Ashton explained in a letter to FBI Director James Comey. According to FBI, agents acted in self-defense resulting in Todashev’s death.