Correct me if I'm mistaken, but I don't believe that police have any duty to tell you ANYTHING if you're not in custody. And if you are in custody, they have broad leeway to lie to you.
In the past, lots of people who didn't commit any crime, who were not arrested for a crime and who had no idea they were a "person of interest" had FBI files. I'm 100% certain that the number who have attracted (not necessarily through any illegal activity) the attention of local police is VASTLY larger. It just takes being involved in some political activity of which the police or the local power structure do not approve.