One Italian fan among about 100 Lazio soccer supporters who sang fascist songs in the beer hall where Adolf Hitler founded the Nazi party has been arrested and fined for giving a Hitler salute.

Munich police spokesman Michael Marienwald told The Associated Press on Tuesday that an 18-year-old from Italy was issued a four-figure fine after police were called to the Hofbräuhaus beer hall late Monday.

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Marienwald said the police were looking at further action against more individuals after a large group of Lazio fans were filmed in the beer hall singing about the Blackshirts, the paramilitary wing of Italy’s National Fascist Party.

The German national flag is seen on a sunny day surrounded by some clouds at the Chancellery in Berlin, Germany, April 29, 2016. REUTERS/Fabrizio Bensch - RTX2C625

The German national flag is seen on a sunny day surrounded by some clouds at the Chancellery in Berlin, Germany, April 29, 2016. (REUTERS/Fabrizio Bensch)

In a video published by the La Repubblica newspaper, the fans finished the song by chanting "Duce! Duce! Duce!" in reference to former Italian dictator Benito Mussolini, an ally of Hitler. The fans appeared to be giving fascist salutes.

Hitler founded the National Socialist German Workers’ Party, better known as the Nazi party, with a speech in the same beer hall in 1920.

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The Lazio fans were in Munich for their team’s Champions League game against Bayern Munich on Tuesday. Lazio won the first leg of the last-16 tie 1-0 and was bidding to reach the quarterfinals.