I don't doubt the story at all and I am sad to hear that, but I have to make the following points:

-) Even if no fingerprints are taken, the other points I made stand.

-) Anecdotal evidence is weak/no evidence, though I will not disregard it completely.

-) Not sure where this happened, call me biased (I really don't want to open a can of worms here), but I have more believe in the police of Austria compared to many other (including the USA for example) countries. [1]

[1] I don't mean to imply the capabilities are different, I want to say that I think the police in the USA, especially on the level of "normal" police officers, seems to get away with far more misconduct / inappropriate behaviour than a police officer in Austria ever would. Crime rates also have a huge impact, in areas of high crime rates or under-funded police especially "smaller" cases will not be investigated properly, et cetera...