Four days since the tragedy happened and still no trace of the 21 missing passengers...
The Danube's high water level, strong currents and bad visibility conditions are impeding the search.
The master of "Viking Sigyn" has meanwhile been arrested for a 30 day-period accused of endangering river traffic. According to prosecution logs and videos would prove this.
However, prosecution didn't say what exactly the master did and/or failed to do...