The U.S. Justice Department will open an investigation into the Chicago Police Department after protests over how it handled the case of a black teenager shot by a white police officer, a person familiar with the matter said on Sunday.
The "patterns and practices" investigation will determine whether the department systematically violates constitutional rights. The source, who spoke on condition of anonymity, would not elaborate on the investigation.
The civil probe follows murder charges filed against the police officer in the October 2014 killing. The shooting was caught on videotape, which was not released until the charges were filed last month.