This behavior is very unprofessional and if this user was sent here in any official capacity, that's more than worrying.
Barring complete access to a building is not how usually the police operates in cases of robbery. Because if you claim to have been robbed, the first question they put to you is: give us a list of what's missing. Naturally, you have to go and look in order to submit the list. To come a month later and claim you still don't know what's missing because you had no access is at least strange and contradicts the fact that police are wrapping up their field investigation. Unless the list with the things missing is not concerned with actual crypto, but private keys are missing, as that NY investigator assumes.
Either way, an official statement is more than welcome and long overdue. That's the way responsible businessmen operate: take responsibility. Be sure to pass that along if you have a channel with the owners.
No one was sent here on "official capacity" and not to insult you but your diagnosis on the situation just shows your lack of understanding of how these events are handled in general let alone specific elements. You probably think they can just "Switch" everything back on like nothing happened... You probably think a lot of things but are severely wrong on all accounts.
If they have only just got access to the BUILDING how could they possibly know the extent of whats missing etc as they literally got the building back, yesterday. Also you realize a building is different than systems etc right...? Talk about Armchair experts in here, suddenly everyones a cop, crypto expert and exchange owner... Amazing