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It turns out Miley Cyrus' smoking stunt at the EMAs was not only frowned upon by MTV - it might have been illegal. 

According to "Agence France-Presse," Dutch authorities are investigating the 20-year-old for lighting up what looked like a marijuana cigarette while accepting an award at the Ziggo Dome in Amsterdam Sunday night. 

A rep for the National Food and Consumer Authority says it plans to meet with the stadium's management to clarify what happened.  While possession of certain amounts of marijuana is decriminalized in the Netherlands, there is still a ban on smoking in public places.  

A spokesperson for the Ziggo Dome says that Miley's onstage antics "caught [them] by surprise" and that it was "not easy to interfere in a moment like that."  

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