Fusion GPS attorney drops bombshell: 'Somebody's already been killed as a result of this dossier'

At least one person has been killed as a result of the Trump-Russia dossier, according to congressional testimony.

Fusion GPS founder Glenn Simpson told the Senate Judiciary Committee in August that he could not describe what steps his firm and the dossier's author had taken to verify the credibility of their sources.

The firm's attorney, Joshua Levy, explained to lawmakers why Simpson was reluctant to reveal much about their sources or methods.

"It's a voluntary interview, and in addition to that he wants to be very careful to protect his sources," Levy told the panel. "Somebody's already been killed as a result of the publication of this dossier and no harm should come to anybody related to this honest work."