The Lititz Borough Police Department shared photos of the balloons, writing, "We give points for creativity, however we want the local prankster to know that we were completely terrified as we removed these balloons from the grates and we respectfully request they do not do that again."
The balloons were a nod to horror movie "It," based on the novel by Stephen King, which is being released in theaters Friday.
In the book and movie, the red balloons are linked to evil clown Pennywise.