Sanders: Trump is a ‘pathological liar’
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Bernie SandersBernie SandersSanders seeks spark from Ocasio-Cortez at Queens rally On The Money: Supreme Court takes up challenge to CFPB | Warren's surge brings scrutiny to wealth tax | Senators eye curbs on Trump emergency powers Biden seeks to fundraise off fact he's running out of money MORE on Monday called Donald TrumpDonald John TrumpFlorida GOP lawmaker says he's 'thinking' about impeachment Democrats introduce 'THUG Act' to block funding for G-7 at Trump resort Kurdish group PKK pens open letter rebuking Trump's comparison to ISIS MORE a “pathological liar” amid the GOP presidential front-runner blaming the Vermont senator’s supporters for causing disruptions at his rallies.

“There was zero effort on the part of our campaign to organize — any disruption — at Trump's” rallies, Sanders said at a MSNBC town hall. “And, you know, if you know me — I've never run a negative TV ad in my life.

“I know Marco RubioMarco Antonio RubioHillicon Valley: GOP lawmakers offer election security measure | FTC Dem worries government is 'captured' by Big Tech | Lawmakers condemn Apple over Hong Kong censorship Lawmakers condemn Apple, Activision Blizzard over censorship of Hong Kong protesters Youth climate activists get Miami Beach to declare climate emergency MORE and I know Ted CruzRafael (Ted) Edward CruzHillicon Valley: GOP lawmakers offer election security measure | FTC Dem worries government is 'captured' by Big Tech | Lawmakers condemn Apple over Hong Kong censorship Lawmakers condemn Apple, Activision Blizzard over censorship of Hong Kong protesters The Hill's Morning Report — Trump's impeachment jeopardy deepens MORE and all these guys,” Sanders said. “But with Trump — what you are dealing with — and I say this without any joy. This guy's a pathological liar,” Sanders said.

When moderator Chuck Todd pushed Sanders further on his criticism, the Vermont senator referenced an article that said Trump "never has any facts."

Sanders blasted Trump for calling him a communist, saying it's a "total, absolute, complete lie."

“So it is very difficult dealing with some guy who lies all the time. And what I think Senator Rubio and many of us feel is this is a guy who's inciting violence,” Sanders said.

Sanders also accused Trump for encouraging violence from his supporters.

“What I am disturbed about is we have a major candidate for president of the United States, Donald Trump, who is literally inciting violence among his supporters,” Sanders said.

Trump's rally in Chicago last Friday was canceled due to safety concerns over massive protests. A protestor at an Ohio rally on Saturday was arrested and charged with disorderly conduct after charged the stage.

The real estate mogul has said he doesn’t condone the violence at his rallies.