Party last night!!!!!!!!!!

You just got home to find the police in front of the house. The neighbors called them and they chased off the party crashers at about midnight. Your son just invited a few friends over and they invited a few and they invited a few and before he knew it, the house was overrun. They swarmed in like locust and took all the booze they could find. Now, the police are talking to your son on the sidewalk when you arrive. He is seventeen. What to do?