UPDATE - Monday - 8/11/2014, 5:02pm ET
WASHINGTON -- Niccolo Manzanaro was sentenced to 25 years in prison on Monday.
EARLIER - Monday - 8/11/2014, 10:07am ET
ROCKVILLE, Md. -- The man behind a brutal beating in Bethesda, Maryland will be sentenced Monday in Montgomery County Circuit Court.
Niccolo "Nick" Manzanero, 33, faces up to 30 years in prison after a jury convicted him of attempted second-degree murder.
When Manzanero and two other men attacked a man in a Bethesda parking garage in April 2013, they left the victim seriously injured.
Cellphone video taken during the early morning attack shows Manzanero and the others teaming up against the man in the St. Elmo Avenue garage.
Manzanero can be seen kicking and hitting the victim who was on the ground. A crowd watched as the attack worsened.
"He was unconscious and Mr. Manzanero did not cease. He was literally kicking his head into the concrete," Montgomery County State's Attorney John McCarthy said during Manzanero's trial.
The actions of a good Samaritan prevented the man's death, said Ramon Korionoff, a State's Attorney's Office spokesman, after the conviction.
Korionoff saying the actions of the good Samaritan prevented the crime from turning into a murder.
The victim survived but was badly hurt. He required a metal plate to treat the injuries to his head.
© 2014 WTOP. All Rights Reserved.