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Hillary Clinton was not struck Thursday when a woman threw a shoe at the former secretary of state while she was on stage in Las Vegas giving the keynote speech at conference hosted by the Institute of Scrap Recycling Industries.

"What was that, a bat? Was that a bat?" Clinton said moments after the footwear flew by.

She then turned to humor. "[Was] that somebody throwing something at me? Is that part of Cirque du Soleil?" Clinton joked. "My goodness, I didn't know that solid waste management was so controversial. ... Thank goodness she didn't play softball like I did."

According to The Associated Press, "Brian Spellacy, U.S. Secret Service supervisory special agent in Las Vegas, said the woman was being questioned and would face criminal charges. Spellacy declined to identify the woman, and he said it wasn't immediately clear what the charges would be. A black and orange shoe was recovered from the stage, Spellacy said."

The AP has video of the incident here.

Clinton, a former senator and former first lady, made a bid for the Democratic presidential nomination in 2008 and is widely expected to run for the White House again in the 2016 campaign cycle.

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