Chauvin is charged with second- and third-degree murder as well as second-degree manslaughter in Floyd’s death. He has pleaded not guilty to all charges.
Zimmerman, who helped secure the scene of the arrest hours after Floyd was transported to the hospital, took the stand on day five of witness testimony in the high-profile trial.
Prosecutor Matthew Frank asked Zimmerman whether in his more than 30 years with the Minneapolis Police Department he had ever been trained to kneel on a person’s neck while that person is handcuffed and in the prone position. (Prone position is when a person lies flat with their chest down.)
Zimmerman said no, adding that doing so would “absolutely” be considered a use of “deadly force.”
“If your knee is on a person’s neck, that can kill him,” Zimmerman testified.
He said a person could still be combative when they are handcuffed but that the threat level against an officer would be very low.
“They’re cuffed ― how can they really hurt you, you know?” Zimmerman said. He added that an officer should move a person, once handcuffed, out of the prone position “as soon as possible” because such a position hinders the person’s ability to breathe.
“Once a person is cuffed, you need to turn a person on the side or sit them up,” Zimmerman said. “You need to get them off their chest.”
Chauvin and two other officers pinned Floyd to the ground while he was handcuffed and in the prone position for more than nine minutes.
This is a developing story. Check back for updates.
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