Two people have been charged in Austria for allegedly playing speeches by Adolf Hitler via the loudspeaker system of a train running from Bregenz to Vienna.

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The suspect was identified as a 20-year-old Austrian-North Macedonian dual citizen with a previous terror conviction for attempting to join the Islamic State group in Syria. “Yesterday's attack was clearly an Islamist terror attack," Chancellor Sebastian Kurz said. The Islamic State group on Tuesday claimed credit for the Vienna attack, calling the perpetrator a “soldier of the Caliphate.” The claim of responsibility was published through the militant group’s media arm, Aamaq. In Switzerland, police in the city of Winterthur said an 18-year-old and a 24-year-old were arrested in consultation with Austrian authorities. Some of the circumstances of the Vienna shooting are reminiscent of the case of Usman Khan, who stabbed two people to death in 2019 in central London.

Police officers stay in position at stairs named 'Theodor Herzl Stiege' near a synagogue after gunshots were heard, in Vienna, Monday, Nov. 2, 2020. Austrian police say several people have been injured and officers are out in force following gunfire in the capital Vienna. Initial reports that a synagogue was the target of an attack couldn't immediately be confirmed. Austrian news agency APA quoted the country's Interior Ministry saying one attacker has been killed and another could be on the run. (Photo/Ronald Zak)

Police officers stay in position at stairs named 'Theodor Herzl Stiege' near a synagogue after gunshots were heard, in Vienna, Monday, Nov. 2, 2020. Austrian police say several people have been injured and officers are out in force following gunfire in the capital Vienna. Initial reports that a synagogue was the target of an attack couldn't immediately be confirmed. “We are victims of a despicable terror attack in the federal capital that is still ongoing,” Austria's Chancellor Sebastian Kurz said hours after the gunfire erupted. Oskar Deutsch, the head of the Jewish community in Vienna, said it was not clear whether the main synagogue had been targeted.