CHICAGO (CBS) — A second video from a squad car dashboard camera, showing another fatal shooting by a Chicago police officer, will be released, Mayor Emanuel said Thursday.

“We will do that next week,” the mayor told reporters.

The video captures a Chicago police officer shooting Ronald Johnson, about a week before the fatal shooting of Laquan McDonald in October, 2014.

The release of the McDonald video sparked protests, demanding justice for McDonald–who was shot 16 times–and the resignations of top city officials. The officer in the McDonald shooting, Jason Van Dyke, has been charged with first-degree murder. Police Supt. Garry McCarthy was fired in the aftermath of the protests.

Earlier this week, Michael Oppenheimer, the attorney for the Johnson family blasted the city for what he calls a year-long cover-up.

“They are still seeking to hide this video,” Oppenheimer said. “They are still denying justice for Ronnie and his family.”