Austrian police say European capitals have been warned of possible attack

https://www.washingtonpost.com/world/police-intelligence-service-warning-european-capitals-of-possible-attack/2015/12/26/fe58f13e-ac1c-11e5-8058-480b572b4aae_story.html

 VIENNA - Police on Saturday said a “friendly” intelligence service has warned European capitals of the possibility of a shooting or bomb attack before New Year's, prompting police across the continent to increase security measures.