George Floyd died on May 25 of asphyxia due to compression of the neck and back, an independent autopsy found.
A video that has sparked outrage across the nation showed a white Minneapolis police officer pinning the handcuffed 46-year-old black man's neck on the ground beneath his knee.
The way he was restrained restricted not only "blood flow into his brain, but also airflow into his lungs," said Antonio Romanucci, an attorney working with the Floyd family.
These findings contradict a Hennepin County Attorney's Office autopsy that found no evidence of "traumatic asphyxia or strangulation."
The attorney Ben Crump thanked thousands of people for protesting police brutality and demanding justice on Floyd's behalf but said that "the violence is absolutely unacceptable.
George Floyd died on May 25, handcuffed and gasping for breath, pinned under the knees of three white Minneapolis police officers.
Ben Crump, an attorney representing Floyd's family, said on Monday that an independent autopsy found that the 46-year-old black was killed by asphyxia due to compression of the neck and back.
"We acknowledge that additional medical information including toxicology and further investigation are necessary for a final report," said Dr. Allecia Wilson, the director of autopsy and forensic services at the University of Michigan. "However, the evidence is consistent with mechanical asphyxia as the cause of death and homicide as the manner of death."
Antonio Romanucci, another attorney working with the family, said two "physical mechanisms" killed Floyd, calling it "the lowest level of human respect and dignity that any community should ever have to endure."
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The weight of the arresting officer Derek Chauvin's knee on Floyd's neck — as well as the knees of two other officers who pressed on Floyd's back — stopped not only "blood flow into his brain, but also airflow into his lungs," Romanucci said.
Yahoonews