It seemed as though hoverboards bursting into flames was the worst thing that could happen to a production company, but a Chinese company at a recent expo found something even worse. Here’s what happened, according to the video’s uploader:

In an unusual moment at the Consumer Electronics Show in Las Vegas, two U.S. federal marshals showed up at a Chinese company’s booth and carried away their one-wheeled skateboard that was on display. The raid on the show floor was the result of a weeks long effort by Future Motion, a Silicon Valley startup that said it invented and patented a self-balancing electric skateboard that looks strikingly similar to the ones the marshals confiscated. Bloomberg Business’s Josh Brustein was there and tells us what happened.