Floyd died in Minneapolis after a white police officer pressed his knee into the 46-year-old black man's neck for more than eight minutes.
Earlier, a preliminary autopsy done by the Hennepin County Medical Examiner found no evidence of strangulation or asphyxia.
An independent autopsy commissioned by the family of George Floyd indicates that he was asphyxiated, and that the death was a homicide.
America's cities boarded up windows, swept up glass and covered graffiti as the country's most significant night of protests in a half-century spilled into another day of unrest fuelled by killings of black people at the hands of police.
In New York, Mayor Bill de Blasio (D) also set a curfew - the city's first in decades - after several nights of running confrontations between officers and protesters.
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President Donald Trump tweeted: "Law & Order in Philadelphia, NOW!" Looting and injuries due to the protests were recorded, and the USA had been facing a awful problem on both racism and coronavirus issues. It also says Floyd was suffering from heart disease, fentanyl intoxication and recent methamphetamine use, but it does not list those factors in the cause of death.
Terrence Floyd also said that he is planning to visit the spot where his brother died on Monday.
A source says that the former police officer didn't make eye contact with anyone when he was brought into the jail and was subject to an unclothed body search. On Monday, Kentucky Gov. Andy Beshear, a Democrat, ordered a state investigation after a man was fatally shot during an overnight confrontation with Louisville police and the National Guard.
While the 46-year-old father-of-two can not explicitly be seen in the video from May 25, one officer leans into the back of the auto and his legs shuffle around as he visibly struggles with someone in the back seat.
"We know that black Americans fare worse than other groups on virtually all measures of health status and it has become all too common to blame individual behaviors, when in fact the science is clear", he said at a news conference. Philadelphia ordered a 6 p.m. curfew as looting continued on Sunday.
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Ontario is already testing long-term care residents and staff, correctional officers and inmates and frontline workers, he said. No more than five people will be allowed to occupy a single campsite, unless they live in the same household.
Protestors in the city demanded the arrest of the three other officers who were involved in his death. At the Minneapolis intersection where Floyd was killed, people gathered with brooms and flowers, saying it was important to protect what they called a "sacred space".
"What we found is consistent with what people saw", Baden said.
In nearby New Jersey, the Camden County Metro Police Chief Joe Wysocki joined demonstrators at the head of a march holding a sign that read "Standing in Solidarity" to honor the movement and spread a message of peace.
However, he mentioned that what's happening right now isn't peaceful and said that the riots were no longer related to giving justice to Floyd's death anymore. It said he suffered the cardiac arrest "while being restrained by a law enforcement officer" on 25 May.
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However, it was up to Police to decide how they should have handled the protest. "They have breached the rules. But it is for the Police, and police discretion as to exactly what actions they take".