Berlin-Brandenburg Airport caused a stir on Friday, because not only was the water contaminated with bacteria, there was now a false fire alarm. According to the federal police, the cause was that a passenger thought he had to smoke in the toilet.
Those passengers who were already in the security area were evacuated to the apron of BER. But there was a breakdown, because actually departing passengers have to be separated from arriving passengers. But that was not the case, so that uncontrolled non-Schengen travelers and departing Schengen travelers were mixed up all over the place.
The result: Great chaos and angry passengers. The federal police then ordered all passengers to be checked, which led to further delays. Specifically, this means that those who have already been checked had to queue up again. Air traffic accumulated one or the other long delay due to the chaotic conditions at BER Airport.