A Miami man with a criminal past has been convicted by a federal jury for an armed robbery in Little Havana last year, falling prey to the stringent hand of the Hobbs Act. Frederick Lee Alvin, 39, was found guilty on charges of conspiracy to commit Hobbs Act robbery, the actual Hobbs Act robbery itself, discharge of a firearm during a crime of violence, and being a felon in possession of a firearm and ammunition, the U.S. Attorney’s Office, Southern District of Florida announced.