A Los Angeles Police Department officer has been charged in connection with a videotaped incident in which a man alleged he was beaten and kicked while being held down by other officers in South L.A., authorities said Monday.

Officer Richard Garcia was charged with one count of assault under the color of authority in connection with the Oct. 16, 2014, arrest of Clinton Alford Jr., said Deputy Dist. Atty. Oscar Plascencia.

Alford has filed a federal civil-rights lawsuit against the officers involved, alleging he was not resisting at the time he was struck. The 22-year-old was initially arrested on suspicion of drug possession and resisting arrest, but prosecutors later declined to pursue the charges.

Garcia, 34, pleaded not guilty to the charge in a downtown L.A. courtroom on Monday afternoon. If convicted, prosecutors said, he faces up to three years in County Jail.

Alford had surrendered to police, but Garcia “allegedly went on to assault the man while he was laying prone on the ground,” according to a statement from the district attorney’s office.