Austrian Interior Minister Karl Nehammer speaks at a press conference in Vi...

Austrian Interior Minister Karl Nehammer speaks at a press conference in Vi...

Police officers stay in position on a street in Vienna, capital of Austria,...

Police officers check a man on a street in Vienna, capital of Austria, Nov....

Police patrol on a street in Vienna, capital of Austria, Nov. 2, 2020. One ...

Police patrol on a street in Vienna, capital of Austria, Nov. 2, 2020. One ...

Police patrol on a street in Vienna, capital of Austria, Nov. 2, 2020. One ...

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police officers search a street in Vienna, capital of Austria, Nov. 2, 2020...

Police officers stand guard on a street in Vienna, capital of Austria, Nov....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police officers are on duty on a street in Vienna, capital of Austria, Nov....

Police block a street in Vienna, capital of Austria, Nov. 2, 2020. One pers...

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police stand guard on a street in Vienna, capital of Austria, Nov. 2, 2020....

Police officers search a street in Vienna, capital of Austria, Nov. 2, 2020...

Police officers search a street in Vienna, capital of Austria, Nov. 2, 2020...