Three U.S. lawmakers penned a letter asking the U.S. Department of Health and Human Services to investigate Ma'Khia's time as a ward of the state under the jurisdiction of Franklin County Children Services.

Mayor Lori Lightfoot announced on Monday that 12 cops involved in the case have been "taken off the street," following the resignation of Chicago's top attorney.

The City Council Progressive Caucus and the Chicago Aldermanic Black Caucus are urging for a probe and hearings examining the Feb. 2019 incident.