Vienna police said Saturday they are increasing security as a precaution after a warning to several European capitals about the possibility of an attack using explosives or firearms between Christmas and New Year, but they see no reason to call off any of the planned events.
Vienna police said in a statement that the tip came from an unidentified “friendly” intelligence service came in days before Christmas. Authorities were also given names of several potential attacks, but further examination of the list and other investigations brought no “concrete results” so far.
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