A man climbed atop a tall tower a Knott's Berry Farm in Buena Park, California, on Saturday, and is reportedly refusing to come down.
Videos swiftly emerged online, showing the man, seen wearing a face mask, standing atop the Supreme Scream tower alongside a US flag.
It was not immediately clear how and why he climbed there. Buena Park police said they are currently working to bring him down, noting that "La Palma between Beach and Western has been closed" and urging the public to stay away from the area.
No further details were immediately available.