Travelers on an intercity train in Austria were left behind “completely shocked” and “very upset” Then play a recording of a speech by Adolf Hitler. That could also be done instead of normal advertisements hearing a crowd chant “Heil Hitler” and “Sieg Heil” over the train’s loudspeaker system.

According to the daily newspaper Der Standard, in the past two weeks Two other similar incidents occurred on the same railway line, always between the city of Sankt Pölten and Vienna.

David Stoegmueller, a member of parliament for the Green Party, said the Nazi leader’s speech was played over the intercom shortly before the train, an OEBB Railjet 661, arrived in Vienna.

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“We listened to two different reproductions”he told the BBC. “First there was 30 seconds of a Hitler speech, and then I heard ‘Sieg Heil’.” Stoegmueller said train crews were unable to stop the recording.

In a statement, Austrian Railways (ÖBB) said: “We clearly distance ourselves from the content. We can assume that the announcements were made by people directly on the train via intercoms. We have filed a report with the police.”

A spokesman for the public railway company ÖBB spoke in statements to the Austrian press on Monday of “technical malfunctions”. Everything indicates that the two suspects, who have been charged but not arrested, had access to the intercom system in the carriages to deliver Nazi salutes, the spokesman added.

According to ÖBB, there is no computer or cyber hacking of the train operating systems.