US President Donald Trump has renewed his attack on China, claiming "serious investigations" are being conducted into how the country handled COVID-19.
During his White House news briefing, he continued to target China's handling of the coronavirus outbreak.
"We believe it could have been stopped at the source. It could have been stopped quickly and it wouldn't have spread all over the world," Trump said.
Earlier on Monday, White House trade adviser Peter Navarro accused China of "profiteering" from the pandemic.
"There's a lot of these antibody tests coming in from China now that are low quality, false readings and things like that," he said.
It comes just days after Secretary of State Mike Pompeo said the US "strongly believed" Beijing tried to cover up how dangerous COVID-19 is.
So far, the coronavirus has killed more than 211,000 people around the world and infected over 3,000,000 more.
Ukrainian President Volodymyr Zelenskiy said on Saturday he had urged Kyiv's Western allies to give "a clear position" on security guarantees including about a potential foreign troop contingent on Ukrainian soil with a US backstop.
At least 10 people were killed in Missouri as a series of tornadoes hit the US Midwest and Southeast overnight, raking a path of destruction that was still being assessed early on Saturday, police said.
At least nine Palestinians were killed, including two local journalists, and others wounded on Saturday in an Israeli airstrike on Gaza's northern Beit Lahiya town, the health ministry said, as Hamas' leaders hold Gaza ceasefire talks with mediators in Cairo.
The Trump administration is considering issuing sweeping travel restrictions for the citizens of 41 countries as part of a new ban, according to sources familiar with the matter and an internal memo seen by Reuters.