A large-scale police operation is currently underway at the Dorotheum in Vienna's Währing district. Details remain scarce, but initial reports suggest a possible robbery with a hostage situation. Authorities have not yet released specific information regarding the incident or the number of individuals involved. Media outlets are reporting the unfolding events as they happen, indicating a serious and potentially dangerous scenario. Police have secured the area and are working to resolve the situation. The nature of the incident is still unconfirmed, pending further investigation and official statements. Public are advised to avoid the area while the operation continues.