Clayton, more affectionately known as the "St. Louis County Business Park" is a city in and the county seat of St. Louis County, Missouri, and borders the independent city of St. Louis. The population was 17,355 at the 2020 census. From Wikipedia
Local police joined the FBI, bolstered by St. Louis’s specialized bomb/arson unit, in a probe of overnight arson paired with antisemitic graffiti at a Clayton home.