(CNN) -
New body camera images of a Chicago policeman were released Wednesday.
They show the fatal police shooting of 22-year-old Anthony Álvarez while fleeing the agent.
Álvarez was armed with a weapon at the time, according to police.
Recently released surveillance camera footage showed Alvarez throwing what appeared to be a gun on the nearby lawn when he was shot on March 31.
Body camera footage, released by Chicago's Civil Police Responsibility Office (COPA), showed two officers who later recognized the gun was on the grass near Álvarez.
Body camera videos of responding officers show them chasing Álvarez by car and then on foot in the early hours of the morning.
The shooting prompted Mayor Lori Lightfoot and two other city officials to jointly call for a revised policy of police pursuit "as quickly as possible."
When an agent turns a corner several meters behind Álvarez, in a residential neighborhood in northwest Chicago, the young man is seen in the body camera images with his back to the agents.
Alvarez had a gun in his right hand at the time, Chicago Police Chief of Detectives Brendan Deenihan said in a briefing with reporters.
The officer's body camera video, released April 28, shows Anthony Alvarez fleeing police when he was shot.
Mayor calls for a reform of the policies of persecution on foot
Just two days before the shooting, 13-year-old Adam Toledo was shot and killed by a Chicago police officer after the boy was seen holding a gun at the end of a foot chase.
Chauvin's guilty verdict draws sighs of relief, but activists say work for racial justice is far from over
Lightfoot, Councilmember Ariel Reboyras and Councilor Felix Cardona Jr. cited Toledo's shooting death in a statement issued Wednesday afternoon.
They asked the department to issue a new foot-chase policy and said that "a minor and inconsequential incident should never, and never again, result in the death of someone."
Chicago Police told CNN they have not released a motive for the events that led to the fatal shooting, which are still under investigation.
In a separate statement with the Alvarez family, Lightfoot said, "The release of these videos will be the beginning of a long healing process for the family and for all those who knew and loved Anthony."
"This tragic event provides additional motivation for the advisability of reforming the policies of persecution on foot in the city," he added.
Attorney Todd Pugh, representing the Álvarez family, saw the video and commented on Tuesday: "It was an absolutely chilling scene and, as his mother indicated, it really left us with more questions than answers."
"I know what I saw, and I saw Chicago Police officers shoot his son as he was running away from them," added Pugh.
In a statement on Wednesday, Álvarez's family asked why he was pursued by the police, what crime he had allegedly committed and how the police explain the video that shows he was shot in the back while fleeing.
"Anthony's family and Chicagoans deserve answers to all of these questions," the statement said.
The Álvarez family remembered him as a talented soccer player and a "doting dad" with a 2-year-old daughter.
The statement said Alvarez was "a good-hearted young man" who put aside his dream of playing professional soccer and took a job at a meatpacking plant to support his girlfriend and daughter.
"I can not believe he is gone.
I really miss my son.
I just want some answers, "said his father, Óscar Martínez.
The family asked that the demonstrations on behalf of Álvarez be peaceful.
Police have not said if Álvarez was a suspect in a crime
In the footage, an officer is heard saying "Drop the gun!"
twice and, less than a second later, he fired five times.
The shooting is visible on both the officer's body camera video and a nearby home video surveillance camera.
"Why did they shoot me?" Alvarez shouted from the ground.
"You had a gun!" Replied an agent.
At one point, the agent who shot Álvarez told another agent: “Handle him!
Handle him!
and took out the handcuffs.
The other officer stopped him and said, "No, I'm going to help you!"
Stop moving!
I'm trying to help you! ”Said the agent who was trying to help Álvarez.
"Stay with me!
Stay with me!".
Álvarez was later pronounced dead of multiple gunshot wounds, according to excerpts from a preliminary report from the Cook County Medical Examiner.
Álvarez's death was declared a homicide, according to the report.
Police were trying to stop and talk to Álvarez, who was "an individual familiar to the officers," according to COPA.
Police have not said if Álvarez was suspected of a crime or what they wanted to talk to him about.
It is unclear if Álvarez knew why the police were after him.
In surveillance footage from the latest shooting, Álvarez can be seen leaving a gas station convenience store when a police car with its lights on begins to chase him.
COPA said the investigation is ongoing, but recommended that the officer who fired the shots "be relieved of police powers while this investigation is pending."
Chicago Police Superintendent David Brown declined to comment on the incident until the investigation was completed.
The agent has been placed on routine administrative leave, he said.
The mayor asks for calm
In the statement to Álvarez's family, Lightfoot called for calm after the video was posted.
Lightfoot urged the public to take the time to watch both the live video and frame-by-frame of the raw video.
"I understand, having investigated many of these shootings, that in many cases officers are asked to make split-second decisions, particularly in cases like this where there is a weapon," Lightfoot told reporters before the video was released. published publicly.
He declined to comment on specific details of the investigation.
Lightfoot said he has asked for the Police Department's persecution on foot policy to be reviewed.
"It is one of the most dangerous activities carried out by agents: dangerous for themselves, dangerous for the person being pursued and dangerous for the public," said the mayor.
"But it is unacceptable that a minor traffic violation resulted in death."
The city's foot-chase policy came under scrutiny last month when the boy Adam Toledo was shot on March 29.
Regarding that incident, the Police said that the weapon was later recovered from behind the fence where the chase ended.
In the video, Toledo is seen turning to his left, towards the agent, and what the police said was that the weapon disappeared behind his right side.
Toledo began to raise his hands while looking at the agent when the police officer fired his gun.
- CNN's Brad Parks, Jason Kravarik and Raja Razek contributed to this story.
Police abuse Anthony Álvarez