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He suffered a cardiac arrest while being restrained by Minneapolis police officers on 25 May, the report found.

It listed Mr Floyd's cause of death as "cardiopulmonary arrest complicating law enforcement subdual, restraint, and neck compression".

The examination also showed he had heart disease and recent drug use.

The findings of the official post-mortem were released shortly after those of a private examination carried out by medical examiners hired by the Floyd family.

Minneapolis policeman Derek Chauvin has been charged with third-degree murder, but lawyer Benjamin Crump told CBS news it was a case of first-degree murder.

"We think that he had intent... almost nine minutes he kept his knee in a man's neck that was begging and pleading for breath," he said.

Looting is reported in Philadelphia.

Video from two Philadelphia TV stations on Sunday shows youths smashing several police cars and looting at least one store.

Periodical cicadas are expected to come out in early summer across southwest Virginia, parts of North Carolina, and in West Virginia.

The last time the cicadas emerged in many of those regions was in 2003 and in 2004, though some areas saw an emergence in 2013.

As many as 1.5 million of the insects can emerge per acre of land.

While they are some of the longest-lived insects in the world, periodical cicadas a spend almost their entire life underground as what entomologists call "nymphs".

Lotomo’ua Tu’akalau was isolated in her house along with three of her children while her husband Lelea Tu’akalau was fighting for his life in a hospital isolation ward.

Lotomo’ua said she understood there were a number of Tongans infected with Covid-19 in the US and she urged them to be strong.

She said while her husband was struggling with the disease she kept on telling him to keep fighting as he would be fine.

She said while in isolation, she lost appetite, was nauseous and frequently become unconscious.

Lotomo’ua Tu’akalau said her husband, Lelea Tu’akalau, is on a ventilator to help him breathe at the hospital’s intensive care unit. She did not name the hospital.

“While we are terrified, we are hopeful for healing. I am pleading for your prayers at this time. I am thankful for friends in times like this,” Lotomo’ua told Kaniva News.

“I love you so much Lelea Kivailahi keep fighting Lelea,” she wrote on Facebook.

“This is a hardest time for me and my family, my husband Lelea Tuakalau tested Positive for the Coronavirus he is in the hospital ICU.”

Finau’s daughter and partner are ill.

“If any of you are feeling unwell, go and get tested,” she said.

“There is no shame in it.”

Kaniva News reports Finau, who is currently in Auckland, said she is concerned that people in the United States are travelling from state to state.

They were not facing the same strict restrictions as New Zealanders.

“I ask Americans to take it seriously,” she said.

“I wish I was home so I could do something for her.”

The 2-inch long Asian giant hornets have landed in the US for the first time, spotted on the west coast.

Multiple stings are deadly to humans and in their "slaughter phase" the hornets destroy honeybees, whose bodies they feed to their young.

Scientists are now on a hunt for the hornets, hoping to eradicate the species before they wipe out US bees.

Though they typically avoid people, in Asia, "murder hornet" stings are thought to cause as many as 50 human fatalities a year, according to the New York Times.

The bulk of the funds will go to its Freely Associated States with Marshall Islands, Micronesia and Palau receiving over $US27.5-million from various federal agencies.

Other Pacific countries will receive a combined total of $US3.3-million from USAID while Papua New Guinea will get a separate $US1.2-million.

The funding announced late last week is on top of the more than $US32-million already committed by Washington since the start of the pandemic.

Tornadoes touched down in Louisiana, Texas and Mississippi.

On Sunday, the Mississippi Emergency Management Agenda confirmed deaths across three counties.

In Louisiana, a number of homes were destroyed in the city of Monroe, with the city's official social media account initially reporting only minor injuries.

The National Weather Service said severe thunderstorms were likely through late Sunday into Monday, in particular across parts of Mississippi, Alabama and Georgia.

According to the latest figures collated by Johns Hopkins University, the US has overtaken China (81,782 cases) and Italy (80,589).

But with 1,200 Covid-19-related fatalities, the US death toll lags behind China (3,291) and Italy (8,215).

The grim milestone came as President Donald Trump predicted the nation would get back to work "pretty quickly".

How did the White House react?

Asked about the latest figures at a White House briefing on Thursday afternoon, President Trump said it was "a tribute to the amount of testing that we're doing".