Hundreds of guests attending the Czech Ball at Prague’s Municipal House were evacuated on Saturday evening after an anonymous caller reported a bomb in the historic building.

Police and emergency services swiftly responded, closing off the area and conducting a thorough inspection.

“We received a report via the emergency line about a possible explosive device inside the Municipal House,” police spokeswoman Eva Kropáčová told Novinky.cz. “Evacuation is underway, and the building is being searched.”

Authorities cleared approximately 500 people from the venue and cordoned off the surrounding streets as a precaution. Bomb disposal experts were deployed to inspect the premises.

A large emergency response team arrived at the scene, including police units, firefighters, and paramedics.

Given the freezing temperatures of around -5°C, medical teams dispatched a special Fenix emergency vehicle to assist those waiting outside.

Just after 11 p.m., police confirmed there was no danger, and the ball resumed after more than an hour. Authorities are now searching for the person behind the false alarm, who could face charges for spreading panic.

The seventh edition of the Czech Ball is an annual high-society event held at the Municipal House, one of Prague’s most famous landmarks.

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