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LAS VEGAS — Authorities have filed federal charges against a Phoenix woman accused of throwing a shoe on stage while Hillary Rodham Clinton gave a convention speech.

The trespassing and violence charges lodged Sunday against Alison Michelle Ernst in U.S. District Court in Las Vegas come as local prosecutors consider a misdemeanor disorderly conduct charge in state court.

Ernst didn't respond to a phone message Monday, and it isn't clear if she has a lawyer.

Alison Ernst, 36, is seen in a booking photo released by the Las Vegas Metropolitan Police Department in Las Vegas April 11, 2014.HANDOUT / Reuters

The 36-year-old faces a June 24 court date on the local charge, which could get her a year in county jail stemming from the incident Thursday.

A court date in the federal case wasn't immediately set. Clinton wasn't struck by the shoe. She continued her speech to a recycling industry conference at the Mandalay Bay resort.

— The Associated Press

Former Secretary of State Hillary Clinton ducks after a woman threw an object toward her while she was delivering remarks at the Institute of Scrap Recycling Industries conference on April 10, 2014 in Las Vegas, Nevada.Isaac Brekken / Getty Images