Bernie Sanders' campaign manager Jeff Weaver accused the Democratic National Committee of trying to "undermine" and "sabatoge" the Vermont senator's 2016 presidential bid.

Aides to the Sanders campaign have been accused of improperly accessing proprietary information belonging to Hillary Clinton's campaign. One Sanders aide has already been fired by the campaign. The DNC has responded by suspending the Sanders campaign's access to the party's national database.

But the Sanders campaign fired back in a Friday press conference, saying the data was compromised by the incompetence of the DNC's own vendors. Weaver argued that the DNC's actions cut the Sanders campaign off from its own information, not just data belonging to Clinton or the DNC.

Weaver insisted that Sanders was running a "clean" campaign and that while the DNC's vendors were responsible for the data breach, no one on the Sanders campaign should have looked at it. He said further "disciplinary action" could be coming and that staff would be told to avoid even the "appearance" of wrongdoing.

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