Shanton was found not guilty of attempted armed robbery and attempted robbery.
Shanton, 24, formerly of the 400 block of Park Place, has a record that includes an armed robbery conviction in Baltimore and a 1993 conviction for unlawful wounding, according to court records.
Shanton also has at least two aliases, authorities said when he was arrested on Oct. 28.
In March, police in Martinsburg, W.Va., arrested Shanton in connection with a Feb. 25 incident in Hagerstown in which several shots were fired at a man.
Shanton was charged in that case with first-degree assault, conspiracy to commit first-degree assault, second-degree assault, reckless endangerment and carrying a concealed weapon with intent to injure, police said.
Shanton is accused of tossing a gun to another man after the victim, Antonio Mooney, knocked it out of his hand. Court records allege he also chased Mooney with a long-barrel weapon.
The other two defendants in the bank case, Julian D. Pace, 22, of Martinsburg, and Paul L. Jackson, 27, of Lancaster, Pa., are awaiting trial.
The three were arrested Oct. 28 after the Washington County Sheriff's Department received a call reporting suspicious activity at the rear parking lot of the Washington County National Bank in Sharpsburg.