As the teen slows down, the officer yells "Hands!"
"COPA's core values of integrity and transparency are essential to building public trust, particularly in incidents related to an officer involved shooting, and we are unwavering in our commitment to uphold these values", the office said in a statement.
In the video, an officer gets out of his auto and begins chasing Adam down an alley.
Lightfoot said Toledo did not shoot at police, but she declined to discuss the details of what the videos show in advance of their release.
A surveillance video from across the parking lot, though recorded from a distance, appears to show Toledo make a tossing motion with his right hand behind the fence before turning to face the approaching officer, who then immediately fired the fatal shot.
The newspaper also reports that the Chicago Police Department has been on alert for potential retaliation against officers because the area where Adam Toledo was shot is a stronghold of the Latin Kings street gang.
"I don't want to get into the real substance of this because the independent investigation is going on, but I've seen no evidence whatsoever that Adam Toledo shot at the police", Lightfoot said.
City officials urged people to remain calm as they prepared for civil unrest following the release of the video footage.
The videos "are incredibly hard to watch, particularly at the end", Lightfoot said at a news conference before the videos were set to be released.
Tensions over racism and policing are already high in the United States as nearby Minneapolis hosts the trial of a white former policeman charged with murdering African-American George Floyd in the same week that the fatal police shooting of an unarmed black motorist sparked violent protests in a suburb of the city. Besides the ongoing trial of Chauvin, the country has in recent days watched video of the fatal shooting of Wright, and a police officer in Virginia pepper-spraying a Black and Latino U.S. Army second lieutenant during another traffic stop. The NBC 5 version is not showing the moment Adam Toledo is shot.
The teenager was shot and killed early March 29, when officers responding to a "shots fired" call on the city's West Side saw "two males in a nearby alley", according to police. They encountered Toledo and a man, 21-year-old Ruben Roman.
After the shot is fired about half a dozen officers respond to the scene calling for medical attention and one officer begins chest compressions after saying he can't feel a heartbeat.
"There are too many damn guns", Lightfoot said.
She said it remained a "complicated and nuanced story".
Meanwhile, community leaders and Toledo's family have called for peaceful demonstrations following the video's release.
"We have heard reports in the media that more protests are planned today, and while we have no direct knowledge of such events, we pray that for the sake of our city, people remain peaceful to honor Adam's memory and work constructively to promote reform", said the family, which planned to hold a news conference later Thursday.
Prosecutors have not indicated the point at which they say the gun ended up with Toledo. Adding to that mistrust is the city´s history of suppressing damning police videos. He was later convicted of second-degree murder.
And the city tried to stop a TV news station from broadcasting video of a botched 2019 police raid in which an innocent, naked, Black woman wasn't allowed to put on clothes until after she was handcuffed.