Cara Delevingne detained in Paris after train meltdown (Report)

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Cara Delevingne Was Banned From Boarding the Eurostar After Foul-Mouthed Rant

Cara Delevingne has let her temper get the better of her once again.

The model and actress, who recently starred in the John Green adaptation "Paper Towns," was fined before boarding a Eurostar train from Paris to London on Monday after she swore at security staff.

Delevingne, 23, acted like a "spoiled brat" and dropped F-bombs, according to onlookers, as she erupted in fury on her way from Paris to London for her sister Poppy's birthday party, U.K. newspaper The Sun reported.

Delevingne lost her cool when her luggage was pulled aside for a random check, according to The Sun, swearing at an officer and his colleague, before dropping to her knees and pretending to pray so she would be allowed to board the train quickly.

See photos of the model turned actress:

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Cara Delevingne through the years
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Cara Delevingne detained in Paris after train meltdown (Report)
Cara Delevingne attends the 'Remember Me' film premiere at the Odeon Leicester Square on March 17, 2010 in London, England. (Photo by Jon Furniss/WireImage)
LONDON, UNITED KINGDOM - NOVEMBER 25: Cara Delevingne attends the first anniversary of Alice By Temperley at Paradise by Way of Kensal Green on November 25, 2010 in London, England. (Photo by Nick Harvey/WireImage)
LONDON, ENGLAND - NOVEMBER 29: Models Poppy Delevingne (R) and sister Cara Delevingne attend the 'Sex And The City 2' DVD Launch Party at the Swarovski Crystallized Lounge on November 29, 2010 in London, England. (Photo by Jon Furniss/WireImage)
LONDON, ENGLAND - JUNE 28: Cara Delevingne attends the summer party at The Serpentine Gallery on June 28, 2011 in London, England. (Photo by Mike Marsland/WireImage)
LONDON, ENGLAND - NOVEMBER 21: Cara Delevingne attends Tiffany & Co. Presents Skate at Somerset House on November 21, 2011 in London, England. (Photo by Nick Harvey/WireImage)
NEW YORK, NY - NOVEMBER 07: VS model Cara Delevingne walks the runway during the 2012 Victoria's Secret Fashion Show at the Lexington Avenue Armory on November 7, 2012 in New York City. (Photo by Randy Brooke/WireImage)
LONDON, ENGLAND - FEBRUARY 16: Cara Delevingne walks the runway at the Issa London show during London Fashion Week Fall/Winter 2013/14 at Somerset House on February 16, 2013 in London, England. (Photo by Mike Marsland/WireImage)
Cara Delevingne arriving for the Burberry Prorsum womenswear catwalk show at Kensington Gardens, as part of London Fashion Week.
Cara Delevingne arriving at the 2015 MTV Movie Awards, Nokia Live, Los Angeles.
Cara Delevingne arrives for the presentation of the Burberry collection during London Fashion Week Spring/Summer 2017 in London, Britain, September 19, 2016. REUTERS/Luke MacGregor
Cara Delevingne poses for photographers at the Chanel "Mademoiselle Prive" exhibition, in London, Britain, October 12, 2015. REUTERS/Peter Nicholls
NEW YORK, NY - AUGUST 01: Actress Cara Delevingne attends the world premiere of 'Suicide Squad' at The Beacon Theatre on August 1, 2016 in New York City. (Photo by Noam Galai/Getty Images)
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The British actress, who is set to appear in "Suicide Squad" as Enchantress later this year, was held in an interrogation room for an hour after which she apologized for the disruptive incident.

The Eurostar is a high-speed railway service between the U.K. and France that goes through the Channel Tunnel.

A representative for Delevingne did not immediately respond to TheWrap's request for comment.

Delevingne became a social media sensation last year following a painfully awkward interview with "Good Day Sacramento" while promoting "Paper Towns."

During the interview, Delevingne had a frosty back-and-forth with her interrogators from KMAX-TV. Asked whether she had read the John Green novel that the movie was based on, the actress — speaking via satellite in New York — shot back, "No, I never read the book or the script actually, I kind of winged it."

Quizzed on whether she had anything in common with her "Paper Towns" character Margo, she replied, "No, I actually hate her."

Eventually, one of the anchors brought the interview to a close, saying, "We'll let you go then, how 'bout that? Why don't you go take a little nap, maybe get a Red Bull?"

Cara Delevingne Uses Social Media To Fight Back After Cringe-Filled Intervi

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