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4 Chicago police officers fired over Lacquan McDonald shooting

The Chicago Police Board on Thursday fired four police officers for allegedly covering up a white officer's 2014 fatal shooting of black teenager Laquan McDonald.

Exaggerated threat posed by black teen who was shot by white officer

Former Chicago police officer Jason Van Dyke, right, was convicted of murder in the 2014 shooting death of Laquan McDonald, left. The Chicago Police Board on Thursday fired four police officers for allegedly covering up the shooting. (Family Photo/Cook County Sheriff's Office/The Associated Press)

The Chicago Police Board fired four police officers on Thursday for allegedly covering up a white officer's 2014 fatal shooting of black teenager Laquan McDonald.

The nine-member board found the officers exaggerated the threat posed by 17-year-old McDonald in order to justify his shooting by Jason Van Dyke. The board voted unanimously to dismiss Sgt. Stephen Franko and officers Janet Mondragon, Daphne Sebastian and Ricardo Viramontes.

Police Supt. Eddie Johnson in 2016 accused the officers of either giving or approving knowingly false statements. None of the four were charged criminally, however they were stripped of police powers and assigned to desk duty as their case proceeded.

A Cook County judge acquitted three other officers in January of conspiracy, obstruction of justice and official misconduct charges in the case.

Former officer Joseph Walsh, officer Thomas Gaffney and former detective David March were charged with obstruction of justice, conspiracy and official misconduct. Prosecutors said they lied to shield Van Dyke from prosecution. A judge rejected the contention that a video of McDonald's death proved police officers staged a coverup.

McDonald was carrying a small knife in 2014 when Van Dyke exited his squad car and almost immediately opened fire. Police video released in 2015 showed Van Dyke firing 16 bullets into McDonald, many after the teen had crumpled to the ground.

Jurors convicted Van Dyke of murder in October. He's serving a more than six-year prison term.

The Illinois Supreme Court denied a bid by the state's attorney general and a special prosecutor to resentence Van Dyke. They deemed the sentence was too lenient for the crime.

The McDonald case has roiled the criminal justice system in Chicago. Former Chicago mayor Rahm Emanuel fired Garry McCarthy, who was the police superintendent at the time. Cook County State's Attorney Anita Alvarez, then the top prosecutor, was ousted by voters.

Many believe Emanuel decided against running for a third term because of the case, which also led to a U.S. Justice Department investigation that found a "pervasive cover-up culture" and prompted plans for far-reaching police reforms.