A person dressed in black shot and set fire to several Tesla vehicles at a repair facility in Las Vegas early Tuesday, police said, in what the FBI is investigating as a possible act of domestic terrorism.

Peaceful Tesla protests have taken place across the country—but some dealerships have also been hit with acts of vandalism, including gunfire and arson, in protests apparently directed at Elon Musk.

This was a targeted attack against a Tesla facility," an assistant sheriff said. “We do believe that it is isolated at this time."