Like for example: a drug raid, or they’re accusing you of illegal hacking, or some sort of TheSilkRoad type of stuff.
Assuming the original investigation find no evidence and leads to no charges, could they use the pirated content that you have as a last ditch effort to get you in prison? Not distributing, just personal use.
Not limited to any specific jurisdiction, just want to know what happens in general.
The thing about illegal searches is once they find something it is easy to put it back - then you go look for evidence and soon you have enough to get a warrant to search that. few criminals are so good at hiding their tracks that the police can’t find enough evidence once they know who to look at.