Two police officers have been fired and three others placed on desk duty over excessive use of force during a protest arrest incident involving two college students, Atlanta’s mayor said Sunday.

Mayor Keisha Lance Bottoms said at a news conference that she and police Chief Erika Shields made the decision after reviewing body-camera footage of a Saturday night incident that first gained attention from video online and on local news.

“Use of excessive force is never acceptable,” Bottoms told reporters. Shields called the footage “really shocking to watch.”

Police on Sunday night identified the fired officers as Investigator Ivory Streeter, who was hired in December 2003, and Investigator Mark Gardner, who was hired in August 1997.

The video, shown on TV as captured by local reporters, shows a group of police officers in riot gear and gas masks surround a car being driven by a man with a woman in the passenger seat.

The officers appear to fire a stun gun at the woman and then pull her from the car. They then use a stun gun on the man. They use zip-tie handcuffs on the woman on the ground. The couple did not appear to be fighting police.

TV reporters said the police had earlier broken glass on the car and flattened the tires.

Bottoms said the woman, Taniyah Pilgrim, was released without charges. She said the man, Messiah Young, was released, too, and she’s ordering the charges against him dropped. She didn’t specify what charges he faced. A police report says Young was charged with attempting to elude police and driving with a suspended license.

The mayor said she’d delayed the news conference several hours to review all the body-camera footage because she and Shields wanted to be certain about what happened.

“I really wanted to believe that the body-worn camera footage would provide some larger view that could better rationalize why we got to this space,” Shields said. “And having spent most of the afternoon with the mayor, reviewing the footage exhaustively, I knew that I had only one option, and that is to terminate the employees.”

Bottoms said she had spoken to leaders at Spelman College and Morehouse College, where she said the the young people were students. She said she’d also spoken to representatives for the students but hadn’t yet spoken directly to them.

Shields offered an apology and said she knows the officers’ behavior was unacceptable and caused further fear.

“Sometimes the best thing, the only thing you can do as a police chief is come in and clean up the mess that’s before you,” Shields said.

“When wrong is wrong, we have to, as law enforcement, start dealing with it in the same manner that we would deal with it with non-law enforcement,” Shields said. “For some reason, we’ve fallen into a gray area where there’s a separate set of rules for law enforcement, and if we want to get out of this space that we’re in now we have to change how we manage internally.”