At least one such sighting has been reported in Massachusetts, and the cases recall a strange outbreak in the Boston area in the 1980s.
The recent cases have included reports of clowns lurking in the shadows, trying to lure children, or chasing people.
The reports have drawn the attention of officials at the FBI and the trend may be linked to at least one death, The New York Times reported last week.
In the recent Massachusetts case, someone called police on the night of Sept.
Officer Robert O’Toole, a Boston police spokesman at the time, said, “We’ve had calls saying there was a clown at a certain intersection and we happened to have [police] cars sitting there, and the officers saw nothing.