Jacksonville Serial Robber Convicted by Jury for Firearms Possession

Source: United States Department of Justice Criminal Division

Jacksonville, Florida – A federal jury has found John Flowers Grissom (55, Jacksonville) guilty of possession of ammunition by a convicted felon and possession of an unregistered, short-barreled rifle without a serial number. Grissom faces a minimum of 15 years, and up to life, in federal prison. His sentencing hearing is scheduled for September 30, 2026.