The question that sent Roberta Williams into a violent rage and caused her to choke a reporter against a hotel wall has been revealed.
The widow of notorious slain gangster Carl Williams was being interviewed by A Current Affair when she flew into a fit of rage.
Mrs Williams allegedly grabbed reporter Reid Butler by the neck and slammed him into a wall during the feisty television interview.
The full interview, which aired on Monday night, showed how a comment by Butler about how her husband 'committed four atrocious murders' set Ms Williams off.
The interview started well with Mrs Williams and journalist Reid Butler exchanging pleasantries.
But their discussion of how informant Lawyer X may have allegedly landed her Melbourne gangster husband in jail soon turned sour when Butler made the remark.
'Informant X was a very small part of this. Carl Williams committed four atrocious murders,' the reporter said.
'He ordered hits on four people.'
But before he could say anything more, Ms Williams angrily looked out of shot, saying: 'we're not getting into this sorry, this wasn't part of this'.
Butler tried to justify his line of questioning as she stormed out of the door, prompting her to warn 'you're going to get me really angry'.
The probing question that sent slain gangland widow Roberta Williams (pictured) into a rage and caused her to violently snap and hit a reporter has been revealed
With a crowd of people surrounding them, she also lashed out at Butler with her hand - saying 'seven f***ing questions'
The confrontation then took a violent turn as the reporter followed her in an attempt to explain himself.
Ms Williams also threw camera equipment onto the floor during the chaotic scenes, and could be seen grappling with the reporter in the hallway.
With a crowd of people surrounding them, she allegedly grabbed Butler by the neck with her hand, saying 'seven f***ing questions you gave me.'
Butler said he felt shaken and was left bleeding after his encounter with Mrs
