A woman threw what she described as a shoe at Hillary Clinton during a speech in Las Vegas on Thursday.
Security officials later ushered the woman who said she threw the shoe out of the event.
She was then arrested, but it remains unclear why she targeted the former first lady.
Las Vegas police said the shoe-thrower is Alison Michelle Ernst, 36, of Phoenix.
Ernst was charged with disorderly conduct, The Daily News reported.
Richard James is acting head of news for BuzzFeed Australia and is based in Sydney.
Contact Richard James at email@example.com.
Got a confidential tip? Submit it here.