Bill Clinton unleashed a series of attacks on Democratic presidential candidate Bernie Sanders on Sunday, criticizing the Vermont senator, his staffers and supporters for the way they are all treating his wife and party front-runner, Hillary Clinton.

Speaking at an event on Sunday in New Hampshire ahead of the early voting state's Tuesday primary where Sanders leads Clinton by a double-digit margin, the former president mocked Sanders, saying, "When you're making a revolution you can't be too careful with the facts," The New York Times reported. Clinton also added that Sanders' attitude is akin to "'anybody who doesn't agree with me is a tool of the establishment.'"

Hillary Clinton and Sanders have sparred over the former secretary of state's relations to Wall Street and her authenticity as a "progressive candidate."

Bill Clinton also attempted to pin online "vicious trolling" by people who said they were Sanders supporters, saying that bloggers "who have gone online to defend Hillary, to explain why they supported her, have been subject to vicious trolling and attacks that are literally too profane often, not to mention sexist, to repeat," reported Time.

Michael Briggs, a spokesman for Sanders' campaign, called Bill Clinton's comments "disappointing," in a statement, CNN reported. "Obviously the race has changed in New Hampshire and elsewhere in recent days," Briggs said. "Bernie will continue to focus on his message - that America has a rigged economy that sends most new wealth to the top and is held in place by corrupt system of campaign-finance. The voters in New Hampshire and in America deserve a campaign that focuses on the real issues."

In recent polling, Sanders leads Clinton in New Hampshire by more than 12 points. According to recent polls compiled by RealClear Politics, Sanders has 53.3 percent support, while Clinton has 40.5.