ST. LOUIS, Mo. (First Alert 4) – A second teen suspect has been charged as an adult in a robbery turned fatal in September in the Dutchtown neighborhood. St. Louis prosecutors on Wednesday charged 17-year-old Jonathan M. Jones with second-degree murder, first-degree attempted robbery and armed criminal action in the Sept. 29 death of Jerimiah Grayer in the 2600 block of Osage Avenue.