system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come every few months I hear of Chicago PD's "alleged" secret detention center? If I already know about it, why is it just alleged? And why does it keep getting "discovered"?
gpt
It was only discovered once. You are probably wondering why it keeps getting *mentioned,* and the answer is that they keep coming up with more details and also debating what to do about it.

They say "alleged" because some of the actions described might be criminal, and since no one has been convicted of anything, the media want to be careful about saying otherwise.