Your should contact the police as soon as possible. The quicker you act, the faster the authorities will be able to collect information regarding your stolen item. Your insurance agent should also be notified right after you have made contact with the police.
The most common way art is stolen is Burglary. It’s important that your installations have proper security in order to prevent these crimes from happening. Its also very important to make sure that the staff you higher to give your building maintenance has a clean record and has no criminal history.
Its responsibility of the insurance carrier to work with the FBI to recover the art that was stolen. It’s possible that you may be asked to work with the corresponding authority.
If your valuable art items are not insured, your efforts will have to be focused on working with the authorities to recover your stolen items. The odds of recovering your stolen items is very low.