Vienna: Police schedule security meetings after tip on possible attack in European capital

Police in Vienna have scheduled two security meetings in the wake of warning to several European capitals about the possibility of an attack using explosives or firearms between Christmas and New Year.

Police spokesman Patrick Maierhofer says police are discussing the situation internally on Monday and then holding a meeting with railway and public transport officials later in the day.

Vienna police said Saturday that the tip from an unidentified "friendly" intelligence service came in the days before Christmas. It said authorities also were given several names of potential attackers, but examination of that list and other investigations brought no "concrete further results" so far.

Police say they are stepping up surveillance of places where crowds are expected to gather, including transport interchanges.