Just a bit of posting history...
Allegedly this building may indeed belong to a family member who is, coincidentally, out of the country in Europe. And for whom OP is apparently the rental agent for the property.
So, basically, this guy sounds to me like was is trying to get around having to pay the outstanding taxes from 2007 (which, I believe he has finally paid according to additional posts).
Of course, he fails to disclose the fact that he MANAGES the building for the LL (his family member), and just claims to be another tenant. So, then, why on earth would just a tenant pay off the outstanding tax lien on a building just to claim a few personal belongings he is unable to access in his rental unit?
(Exactly, he WOULDN'T).
To OP: Stop changing the story. If you want valid advice, we need to have the straight story THE FIRST TIME. Don't keep changing it like you change your underwear. Stop wasting our time.
(See posting hx, folks...)