The online war between supporters of Democratic candidates Hillary Clinton and Bernie Sanders escalated ahead of Tuesday's round of primaries, this time to include $1 million and an (alleged) coordinated porn attack.

According to The Hill, pro-Sanders Facebook pages such as Bernie or Bust, Bernie Believers and Bernie Sanders is my HERO, were attacked Monday night. Eyewitnesses said the pages were spammed with porn, and then reported for obscene content. Facebook confirmed to The Hill that the pages were in fact "inaccessible for a brief period." On Tuesday afternoon, Vocativ observed pornographic images popping up on the group Bernie Sanders' Dank Meme Stash.

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The timing of the attacks didn't go unnoticed. Last week, Correct the Record, a political action committee of fellow Democratic hopeful Hillary Clinton, introduced a $1 million initiative aimed at stymying online harassment from both Sanders supporters and Republicans. Called Barrier Breakers 2016, its mission statement outlines an enhanced digital strategy, but also singles out online engagement with "Bernie Bros." With regard to the bros—characterized in the media as overzealous, white, frat boy types that troll opponents relentlessly online—promises to respond "quickly and forcefully to negative attacks and false narratives."

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11 PHOTOS Hillary Clinton potential running mates, VPs See Gallery Clinton accused of porn attacks on pro-Sanders Facebook pages Tim Kaine The junior Democratic Senator from the swing state of Virginia could be a strategic selection for Hillary. Kaine also served as the governor of Virginia from 2006- 2010. The junior Democratic Senator from the swing state of Virginia could be a strategic selection for Hillary. Kaine also served as the governor of Virginia from 2006- 2010. (Photo by Samuel Corum/Anadolu Agency/Getty Images) Elizabeth Warren The current U.S. Senator from Massachusetts is popular among progressive Democrats, and some even tried to draft her to run for president herself in 2016. (Photo by Andrew Harrer/Bloomberg via Getty Images) Sherrod Brown Insiders believe that the senior U.S. Senator from Ohio could help Clinton increase her popularity with working-class voters, a group she has yet to win in a big way so far in primary contests. (Photo By Bill Clark/CQ Roll Call) Cory Booker The U.S. Senator from New Jersey is both youthful and charismatic and would add racial diversity to a Clinton ticket. (Photo by KK Ottesen for The Washington Post via Getty Images) Tom Perez The current U.S. Secretary of Labor is considered a sleeper pick by many Democrats because he is not well known outside of D.C., but some believe his strength and popularity among union workers and other progressive groups could be an asset to Clinton's ticket. (Photo By Tom Williams/CQ Roll Call) Bernie Sanders The Independent from Vermont has become Hillary Clinton's primary rival for the Democratic nomination, garnering a surprising amount of support. Bringing Sanders onto the ticket could help to unite both sets of supporters who have been split in Democratic primaries. (Photo by Ralph Freso/Getty Images) Martin O'Malley A former 2016 rival of Hillary Clinton, and former Maryland governor, Martin O’Malley could help bring some executive experience, along with a slight youthful boost to the ticket. (Photo by Joe Raedle/Getty Images) Tom Vilsack The Secretary of Agriculture since 2009, Tom Vilsack also served as the governor of Iowa from 1999 to 2007. Vilsack could bring some governing experience along with swing state influence. (BELGIUM - Tags: AGRICULTURE POLITICS BUSINESS) Evan Bayh Evan Bayh could bring a more right leaning brand of politics to the ticket. Bayh previously served as the junior U.S. Senator from Indiana from 1999 to 2011, and also as the 46th Governor of Indiana from 1989 to 1997. Joe Biden While the likelihood of him agreeing to take on the veep job again might be low, Biden's popularity among Democrats would likely boost Clinton's chances. (Photo credit MANDEL NGAN/AFP/Getty Images) Bill Clinton Hillary's husband is technically allowed to serve in the job, and some legal experts even think he'd be able to take office if necessary. Unfortunately for the diehard Clinton supporters, a Clinton-Clinton ticket will probably be a dream that never comes true. (Photo By Bill Clark/CQ Roll Call) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

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Members of the popular Sanders subreddit r/SandersForPresident tried to figure out what was happening. Correct the Record, meanwhile, staunchly denied it had anything to do with the porno cyberattack. The group's communications director, Elizabeth Shappell, also pointed out to Vocativ in an email that the group Bros 4 Hillary acknowledged that a "rogue member" of their organization was partially responsible for the porn.

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"Correct the Record strongly condemns any form of online harassment, vile language, explicit content, or bullying. Barrier Breakers 2016 had nothing to do with this incident, and anyone reporting otherwise is not reporting the truth," she wrote. "Barrier Breakers 2016 is currently engaging in only positive content supporting Hillary Clinton's campaign to be our next president."

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