Mitt Romney's presidential campaign spiked an ad during the final weeks of the 2012 campaign that would have criticized President Obama's handling of the terrorist attack in Benghazi, a source with knowledge of the ad confirmed to The Hill.

The television spot was created by the Republican National Committee and played off the famous "3 a.m." attack ad that Hillary ClintonHillary Diane Rodham ClintonBiden slams Trump over golf gif hitting Clinton Overnight Cybersecurity: Equifax hit by earlier hack | What to know about Kaspersky controversy | Officials review EU-US privacy pact Overnight Tech: Equifax hit by earlier undisclosed hack | Facebook takes heat over Russian ads | Alt-right Twitter rival may lose domain MORE aired against Obama during the 2008 campaign.

"It's 3 a.m. and your children are safe and asleep, but there's a phone in the White House and it's ringing. Something's happening in the world," a voiceover in the ad says as images of a building burning are shown and gunfire is heard in the background. The ad then displays text that reads: "Security requests denied. Four Americans dead. And an administration whose story is still changing."

"The call came. Americans deserve answers," the final text of the ad reads.

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According to the source with knowledge of the ad's creation, the Romney campaign stopped it from airing for fear that it would shift the focus away from the economy.

ABC News first reported the existence of the ad on Thursday.

Republicans have repeatedly criticized Obama and other top administration officials for their handling of the Sept. 11 attack on the Benghazi consulate, which left four people dead, including the U.S. ambassador to Libya.

A number of Republican-controlled congressional committees have investigated the attack and lawmakers are urging Speaker John John BoehnerJohn Andrew BoehnerSpeculation mounts, but Ryan’s job seen as safe Boehner warns Trump: Don't pull out of Korea-US trade deal GOP Rep: Ryan wasting taxpayers dollars by blocking war authorization debate MORE (R-Ohio) to create a select committee to investigate it.