US Secretary of State Mike Pompeo has relaunched his attack on China, claiming there's "significant evidence" to show their role in the coronavirus outbreak.
"There is a significant amount of evidence that this came from that laboratory in Wuhan," he told ABC's This Week.
Pompeo, however, did not dispute US intelligence agencies' conclusion that it was not manmade.
Meanwhile, China's state run newspaper dismissed the allegations, adding that the US official was "bluffing".
"The Trump administration continues to engage in unprecedented propaganda warfare while trying to impede global efforts in fighting the COVID-19 pandemic," the editorial said.
So far, more than 3,568,217 people around the world have been infected, with 248,347 deaths.
Hamas freed the last living Israeli hostages from Gaza on Monday under a ceasefire deal and Israel sent home busloads of Palestinian detainees, as US President Donald Trump told Israel's parliament that peace had arrived in the Holy Land.
Two trains collided in eastern Slovakia on Monday, derailing an engine and a carriage and injuring at least 66 people, emergency medical services and police said.
Hamas forces have killed 32 members of "a gang" in Gaza City in a security campaign launched after a ceasefire came into effect on Friday, while six of its personnel were also killed in the violence, a Palestinian security source said on Monday.
Joel Mokyr, Philippe Aghion and Peter Howitt won the 2025 Nobel economics prize for their work on how innovation and the forces of "creative destruction" can drive economic growth, the Royal Swedish Academy of Sciences said on Monday.