International students from Syria and Ukraine also came under a barrage of insults by the German language teacher at a school in the Austrian capital.
The Iranian response has been received and the EU is consulting with the US and the other parties "on the way ahead," a spokesperson for EU foreign policy chief Josep Borrell says.
A fresh round of nuclear talks between Iranian and American diplomats has begun with a range of issues clouding the future course of these negotiations.
The abruptly called meeting in Vienna comes after the EU foreign affairs chief has repeatedly pushed to salvage the deal in past weeks.
Tehran's decision to move the facility comes as diplomatic efforts to restore Iran’s tattered nuclear deal appear stalled.
Iran has been engaged for a year in negotiations with France, Germany, Britain, Russia and China directly, and the United States indirectly in the Austrian capital of Vienna to revive the 2015 nuclear agreement.
Tehran has passed on its proposals on the remaining issues to the American side through the EU senior negotiator, and now the ball is in US court, Iran's Foreign Minister Hossein Amirabdollahian said.
Amid the reshuffling of regional dynamics and the wider tug-of-war between the US and Russia, Tehran has reverted to its modus operandi of violence and chaos.
Tehran finds itself in a geopolitical, economic, and diplomatic bind.
Several Iranian officials have said that a deal on Iran's nuclear programme is expected before the end of the week with some minor technical issues being discussed in Vienna.
Iran Foreign Ministry spokesperson has said that an agreement to revive the 2015 nuclear deal can be reached very soon if the US and European parties show determination.
US Secretary of State Blinken and Russian FM Lavrov meet in Geneva in a high-stakes bid to defuse tensions, with the West fearing that Moscow will invade Ukraine despite warnings of severe reprisals.
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