Former Mayor Pete Buttigieg of South Bend, Indiana, raised eyebrows late Monday when he declared himself victorious in the Iowa caucuses even though none of the vote had been reported.

"Tonight, an improbable hope became an undeniable reality," Buttigieg told a cheering crowd in Iowa. "So we don't know all the results, but we know by the time it's all said and done — Iowa, you have shocked the nation. Because by all indications, we are going on to New Hampshire victorious."

"Tonight, Iowa chose a new path," said one tweet from Buttigieg's official Twitter account. Another congratulated Iowans as having "proved those skeptics wrong."

The Iowa caucuses hit a snag Monday evening after technical difficulties in the reporting process that resulted in widespread delays. Official results were not expected to come in until Tuesday morning at the earliest.

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The 2020 Democratic presidential candidate Pete Buttigieg took to the podium late Monday night to declare himself the winner of the Iowa caucuses, even though none of the vote had been reported.

"Tonight, an improbable hope became an undeniable reality," the former mayor of South Bend, Indiana, told a cheering crowd. "So we don't know all the results, but we know by the time it's all said and done — Iowa, you have shocked the nation. Because by all indications, we are going on to New Hampshire victorious."

Buttigieg's official Twitter account also sent out some tweets in which the former mayor appeared to declare victory.

"The skeptics said 'not now,'" one tweet said. "'Not this time.' All this talk of 'belonging,' of bridging divides, is too naive. Too risky. So tonight I say — with a heart filled with gratitude — Iowa, you've proved those skeptics wrong."

"Tonight, Iowa chose a new path," another tweet said.

Here were the official results at the time Buttigieg declared victory:

Iowa is the first state to hold a contest in the Democratic primary. The caucuses began at about 7 p.m. CT, but the night ended with zero percent of precincts reporting because of technical difficulties with the reporting process that resulted in widespread delays.

The Iowa Democratic Party later said it was performing "quality control" checks on the results because of those irregularities before releasing them out of an "abundance of caution."

Media reports later cited Democratic officials who said the delay was connected to the party's use of a new app to report precinct results, but the party denied that the app crashed.

Instead, the Iowa Democratic Party said in a statement that it found "inconsistencies in the reporting of three sets of results" and emphasized that it was a "reporting issue" and wasn't linked to any hacking or improper intrusion.

Heading into the Iowa caucuses, the latest RealClearPolitics polling average showed Buttigieg in third place in the state behind Sen. Bernie Sanders of Vermont and former Vice President Joe Biden, with Sen. Elizabeth Warren close behind.

The Sanders campaign responded to Buttigieg's declaration of victory on Monday by telling reporters it would release its own internal polling numbers that would show Sanders as being ahead, even though they didn't include 100% of precincts.