The police announced this to OÖN on Sunday at noon. The 42-year-old had not returned from a local tour with friends. More on this:

Family man missing: The last trace of Roland K. leads to the Donaulände
The police are now assuming a tragic accident and are searching in the Danube area. On Sunday, the area between Lentos Art Museum and Port flown by helicopter. That had already been planned for Friday, but the weather did not make a helicopter flight possible. Drones and boats were already deployed from the Lentos Danube down on Thursday.
After the search operation on Sunday had ended unsuccessfully, the police saidall possibilities have now been exhausted.
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