Presidential debate moderator Candy Crowley fact checked Mitt Romney after the Republican presidential candidate charged that President Obama failed to call the attack on the U.S. consulate in Benghazi an "act of terror." (See update below).

More than an hour into the debate, an undecided voter in the town hall forum asked the president about the recent attack in Libya that killed Ambassador Christopher Stevens and three additional Americans.

When Romney responded to the question, he charged that it took Obama days to call the Benghazi attack an act of terror. Obama called the incident an "act of terror" during his remarks on September 12, just one day after the tragedy.

"No acts of terror will ever shake the resolve of this great nation, alter that character, or eclipse the light of the values that we stand for," Obama said in the Rose Garden. "Today we mourn four more Americans who represent the very best of the United States of America."

Obama interrupted Romney, telling the Republican presidential candidate to "get the transcript" of his remarks. When the governor doubled down on his charge, Crowley interjected, saying the president "did in fact" call the attack an act of terror.

"He did in fact call it an 'act of terror,'" Crowley said.

"Can you say that a little louder?" Obama asked.

Crowley continued speaking to Romney. Referring to the president, she said, "It did as well take two weeks or so for the whole idea of there being a riot out there about this tape to come out. You are correct about that."

The succinct live factcheck left quite the impression. Twitter exploded with messages praising and criticizing the CNN host.

Crowley joined her CNN colleagues just after the debate concluded, where she was immediately asked about her Libya-related point.

"I knew that the president had said 'act of terror,'" Crowley said. "I heard it ... [Romney] picked that one wrong fact."

UPDATE: On Wednesday, Crowley responded to conservative critics who said she "backtracked" on her Libya fact check.

During an interview with Soledad O'Brien, Crowley firmly stated that she did not backtrack on her fact check:

...We got hung up on this, “Yes, he said. No, I didn’t. I said terror. You didn’t say terror.” And then there was this point they both kind of looked at me...And what I wanted to move this along...So I said, “He did say acts of terror, called it an act of terror. But Governor Romney, you are perfectly right that it took weeks for them to get past the tape.
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  • US-VOTE-2012-DEBATE

    US President Barack Obama (L) Republican presidential candidate Mitt Romney (R) participate in the second presidential debate at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • Mitt Romney, Barack Obama

    Republican presidential nominee Mitt Romney and President Barack Obama shake hands after the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)

  • Mitt Romney, Barack Obama

    Republican presidential nominee Mitt Romney and President Barack Obama shake hands after the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)

  • President Barack Obama shakes hands with Republican presidential nominee Mitt Romney at the end of the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/David Goldman)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (L) and Republican presidential candidate Mitt Romney (R) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • MItt Romney, Barack Obama

    President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney speak during the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • MItt Romney, Barack Obama

    President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney participate in the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (L) and Republican presidential candidate Mitt Romney (R) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • Republican presidential nominee Mitt Romney listens as President Barack Obama speaks during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/David Goldman)

  • Republican presidential nominee Mitt Romney and President Barack Obama speak during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/David Goldman)

  • Barack Obama, Mitt Romney

    President Barack Obama, right, listens as Republican presidential candidate former Massachusetts Gov. Mitt Romney answers a question from a member of the audience during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012 in Hempstead, N.Y. (AP Photo/Mary Altaffer)

  • MItt Romney, Barack Obama

    President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney participate in the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • President Barack Obama and Republican presidential nominee Mitt Romney speak during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/David Goldman)

  • MItt Romney, Barack Obama

    President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney participate in the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • Mitt Romney, Barack Obama

    Republican presidential nominee Mitt Romney and President Barack Obama spar during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)

  • President Barack Obama, left, and Republican presidential nominee Mitt Romney address members of the audience during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Michael Reynolds)

  • US-VOTE-2012-DEBATE

    US President Barack Obama and Republican presidential candidate Mitt Romney both speak at the same time during the second presidential debate October 16, 2012 at the David Mack Center at Hofstra University in Hempstead, New York. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    CNN's Candy Crowley (C) conducts the second presidential debate with US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • MItt Romney, Barack Obama

    President Barack Obama speaks as Republican presidential candidate and former Massachusetts Gov. Mitt Romney listens during the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • President Barack Obama listens as Republican presidential nominee Mitt Romney speaks during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Eric Gay)

  • Mitt Romney, Barack Obama

    Republican presidential nominee Mitt Romney and and President Barack Obama answer a question during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)

  • President Barack Obama addresses members of the audience during the second presidential debate with Republican presidential nominee Mitt Romney at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Shannon Stapleton)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • MItt Romney, Barack Obama

    President Barack Obama speaks as Republican presidential candidate and former Massachusetts Gov. Mitt Romney listens during the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • A member of the audience asks President Barack Obama a question during the second presidential debate with Republican presidential nominee Mitt Romney at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Win McNamee)

  • President Barack Obama, left, speaks to Republican presidential nominee Mitt Romney during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Win McNamee)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney and US President Barack Obama debate on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • Moderator Candy Crowley, center, addresses President Barack Obama, left, and Republican presidential nominee Mitt Romney during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Michael Reynolds)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney (L) and US President Barack Obama debate on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney and US President Barack Obama debate on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • Republican presidential nominee Mitt Romney and President Barack Obama speak during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Eric Gay)

  • Barack Obama, Mitt Romney

    Republican presidential nominee Mitt Romney answers a question as President Barack Obama listens during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool, Rick Wilking)

  • Republican presidential nominee Mitt Romney, left, addresses President Barack Obama during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Shannon Stapleton)

  • Republican presidential nominee Mitt Romney listens as President Barack Obama speaks during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Eric Gay)

  • President Barack Obama addresses members of the audience during the second presidential debate with Republican presidential nominee Mitt Romney at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Shannon Stapleton)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney (rear) and US President Barack Obama debate on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican Presidential candidate Mitt Romney argue during the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

  • MItt Romney, Barack Obama

    President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney participate in the second presidential debate at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

  • Republican presidential nominee Mitt Romney, left, listens as President Barack Obama addresses members of the audience during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Michael Reynolds)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican Presidential candidate Mitt Romney argue during the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / TIMOTHY CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney (L) listens to US President Barack Obama on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    US President Barack Obama (R) and Republican presidential candidate Mitt Romney (L) participate in the second presidential debate, the only held in a townhall format, at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012, moderated by CNN's Candy Crowley. AFP PHOTO / Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

  • US-VOTE-2012-DEBATE

    Republican Presidential nominee Mitt Romney (L) and US President Barack Obama debate on October 16, 2012 during the second of three presidential debates at Hofstra University in Hempstead, New York. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)