Police evacuated Vienna's main train station on Monday over an unspecified threat, halting rail traffic before giving the all clear around 90 minutes later, but national rail company OBB warned continued delays and cancellations were expected.

Vienna’s Central Station was evacuated over unspecified threat, before police called the search negative, in which numerous officers and explosive detection dogs from the police dog unit were deployed.

"A large police operation is underway at Vienna's main station. After an incoming threat, the station is being evacuated," police said on X, urging the public to avoid any unnecessary trips to the station, a major rail hub.

Police are clearing Vienna's main train station over an unspecified threat and rail traffic has been halted, the police and national rail company OBB said on Monday. While the police did not describe the threat,

A train station in Vienna has been evacuated as an "unspecified threat" has sparked havoc in the Austrian capital. At the moment, all trains have been halted, the national rail company OBB has revealed.