Here is what the guy in the clip had to say about this:
#1 - Are you sh#ting me?
A - No, this is every bit as real and messed up as it seems
#2 - What did you do when you saw the footage?
A - I immediately left my apartment and called the police.
#3 - Who is that girl?
A - I have no idea, she didn’t say much when the cops came and took her.
#4 - What was it she actually climbed down from?
A - It is a storage loft/area in the apartment. It has no connection to any outside ventilation or anything of that such. It does go pretty deep back in there, almost all the way to over the stove/kitchen area. She had set up a little nook for herself.
#5 - How did she get in there?
A - I have no idea, the only way she could have gotten in is through the window, as I am on the top floor and there is a fire escape. The police think she was probably coming in to rob me when I was gone and decided to stow away in the crawl space. Supposedly this isn’t the first time the cops had come across something like this.
#6 - How long was she in your apartment?
A - The police officers thought it looked as though she had been there for at least a couple weeks, although could have been longer.