Supporters of President Donald Trump inundated a hotline used by Iowa caucus precinct leaders to report their results Monday night, contributing to a delay in the final tally, Bloomberg and NBC News reported.

The party's hotline number was repeatedly posted on 4chan, a right-wing online message board, where anonymous users urged others to call in.

"Uh oh how unfortunate it would be for a bunch of mischief makers to start clogging the lines," one user wrote Monday night, according to NBC.

State party officials haven't said how many prank calls came in or how much that exacerbated the vote-count delay, which has stretched into Thursday.

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Supporters of President Donald Trump inundated a hotline used by Iowa caucus precinct leaders to report their tallies, contributing to significant delays in the final tally, Iowa Democratic Party officials said.

NBC News reported on Thursday that the party's hotline number was repeatedly posted on the online message board 4chan as voting took place on Monday night. Its users, who are anonymous and have trolled and harassed the president's political opponents, urged others to call in.

"Uh oh how unfortunate it would be for a bunch of mischief makers to start clogging the lines," one user wrote, according to NBC.

Ken Sagar, a member of Iowa's Democratic central committee, said on Wednesday night that he fielded calls from people who dialed in to express their support for the president, Bloomberg News reported.

State party officials said they identified and blocked repeat prank callers but haven't said how many intentionally disruptive calls came in and how much they exacerbated the vote-count delay, according to NBC.

"The unexplained, and at times hostile, calls contributed to the delay in the Iowa Democratic Party's collection of results, but in no way affected the integrity of information gathered or the accuracy of data sets reported," the Iowa Democratic Party said in a statement to Bloomberg on Thursday.

Tim Murtaugh, the Trump campaign communications director, told NBC that the campaign didn't have anything to do with the disruptions and that it was "laughable" that Democrats "would try to blame Trump for their own incompetence."

The results of the Iowa caucus on Monday were delayed largely because of a malfunctioning mobile app designed to report results to the Iowa Democratic Party. By Wednesday evening, 97% of Iowa's 1,765 precincts had reported results, showing former Mayor Pete Buttigieg with a slight lead over Sen. Bernie Sanders.

A New York Times report on Thursday detailed inconsistencies and inaccuracies in the vote tallies reported by the state party even after "quality control checks." The Times found that results reported by over 100 precincts weren't possible under the caucus rules or didn't match the data reported by the state party.

The Times said it didn't find any evidence that the inconsistencies were intentional.