A former Baltimore police officer seen on video repeatedly punching a man on the sidewalk has been charged with assault, the state's attorney said Tuesday.

Prosecutor Marilyn Mosby announced an indictment against Arthur Williams on charges of first-degree assault, second-degree assault and misconduct in office, WMAR reports.

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A second officer seen not intervening in the video was not charged, but was “placed on administrative duties,” according to the Baltimore Police Department. A warrant is currently out for Williams's arrest.

Mosby told reporters on Tuesday that her office considered publicly available video evidence as well as other unreleased evidence before charging Williams.

Williams, who first joined the police force last year, was suspended and tendered his resignation over the backlash following the incident.

Warren Brown, the attorney for 26-year-old Dashawn McGrier, says that Williams decided to make his client a "punching bag" in the video, which went viral over the weekend.

“It seems like this officer had just decided that Dashawn was going to be his punching bag,” Brown said. “And this was a brutal attack that was degrading and demeaning to my client, to that community, and to the police department.”

Baltimore Mayor Catherine Pugh (D) issued a statement on Saturday, calling the scenes in the video "very disturbing."

"I have seen the very disturbing video of an encounter between a Baltimore City police officer and a Baltimore City resident and have demanded answers and accountability," Pugh said.

"We are working day and night to bring about a new era of community-based, Constitutional policing and will not be deterred by this or any other instance that threatens our efforts to re-establish the trust of all citizens in the Baltimore Police Department," she added.