Rule 1: Never talk to the police.
Rule 2: Rule 1 goes double for the corrupt FBI.
I’ve had Sheriff’s Deputies show up at my residence a many years ago just wanting to talk. I opened my door just a crack. They asked me to step outside. I asked why. They said for officer safety. I told them that if they felt unsafe, they should leave. They asked if they could come inside my home. That was not going to happen. I asked if they had an arrest warrant or search warrant; they didn’t. Told them to get off my property, NOW, or I’d call for a state trooper to remove and arrest them. They left.
Rule #3: Always remember you are not a witness, you are the target!