Chicago police Officer Jason Van Dyke was found guilty of second-degree murder in the 2014 fatal shooting of 17-year-old Laquan McDonald.
Van Dyke was also found guilty of 16 counts of aggravated battery. He was found not guilty of official misconduct.
His bond was revoked and sentencing was scheduled for October 31.
Though he was originally charged with first -degree murder, jurors were instructed Thursday that they also could consider second-degree murder.
They began deliberations Thursday afternoon.
Van Dyke was the first Chicago police officer to be charged with first-degree murder since 1980.
The shooting was captured on a grainy police dashcam video. Van Dyke said he fired in self-defense after McDonald lunged at him with a knife. But the dashcam video — which a judge ordered the city to release 13 months after the shooting — showed McDonald walking away from police, rather than charging at them.
Video of the shooting led to protests, a Justice Department civil rights investigation, criticism of the city’s mayor and eventually the ouster of the police superintendent.
The prosecution said Van Dyke fired unnecessarily within six seconds after arriving at the scene, striking McDonald 16 times.
Information from CNN.com contributed to this report.
