Prosecutors in Coweta County, Georgia, released body camera video (below) from two deputies on May 20 showing the deputies repeatedly using their tasers on Chase Sherman until he died on November 20, 2015.
Chase was riding home from Atlanta, Georgia, to Destin, Florida, in a rental car with his parents and fiance when he began acting strangely, possibly due to a bad reaction to synthetic marijuana he used days earlier, reports The New York Times.
Chase's mother, Mary Ann Sherman, told CNN in March that her son thought he was being kidnapped. She called 911 and said Chase was on drugs and experiencing a mental breakdown, but added that he wasn't armed; she asked that police not to injure her son.
Coweta County deputies Joshua Sepanski and Samuel Smith responded to the call.
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The video begins with one of the deputies arriving on the scene. Chase, who is handcuffed, is struggling with another deputy in the family car. That deputy tells the arriving deputy: "Tase his a--! Tase him! Tase him! Hit him!"
Both deputies use their tasers on Chase multiple times.
According to the Sherman family's attorneys, Chase was tasered 15 times.
Chase, who in the video is calm at times, appears to be desperate to get out of the car and away from the tasing.
The deputies are enraged and demand to know why Sherman is acting strangely, but he can only reply in gibberish.
Mary Ann tells the deputies not to shoot her son, but the chaos continues.
At one point, Chase appears to get his handcuffed hands on a taser. The deputies panic, as the struggle and tasing continues.
Chase gets pushed to the floor of the car between the front and back seats.
An emergency medical technician arrives on the scene, gets on top of Chase and says, "I got all the weight of the world on him now."
Chase is tased again. Moments later, he says: “I’m dead. I’m dead."
The deputies and the medical technician quickly panic after they realize Chase is not breathing and frantically pull him out of the car. The medical technician performs CPR on the side of the highway, but Chase dies at the scene.
CNN reported on March 10 that Chase was taken by an ambulance to Piedmont Hospital in Newnan, Georgia, where he was pronounced dead.
In the video, one deputy expresses his concern to his colleagues that he is going to be fired, but they smile, joke and reassure him he won't be terminated.
Chase's death certificate said he died from "an altercation with law enforcement with several trigger pulls of an electronic control device,” and that his body had been pushed to floor of the car and compressed "by the body weight of another individual," notes The New York Times.
"How can they do this when they know someone is having a breakdown?" L. Chris Stewart, the Sherman family's lawyer, told the newspaper. "Once they started shocking him, how can someone comply when they’re being electrocuted over and over again?"
"There was no way for him to resist," Stewart added. "For four minutes and 10 seconds after he said ‘I quit,’ they still tased him and kept him on the ground. That’s torture, and they killed him."
Coweta County senior assistant district attorney Kevin McMurry told CNN in March they hoped to make a decision on whether to charge the officers involved by April.
Coweta County district attorney Peter J. Skandalakis recently told The New York Times that he "really haven’t formed a final opinion about it."
The deputies have not been suspended and are still on duty, according to the prosecutor.
WARNING: GRAPHIC VIDEO, LANGUAGE