The head of the World Health Organization (WHO) has said further investigation is needed to conclusively rule that Covid-19 emerged from a laboratory in China.
Tedros Adhanom Ghebreyesus said that although a lab leak was the least likely cause, more research was needed.The US and other countries have criticised China for failing to provide the WHO with sufficient data.
Beijing has always dismissed the allegations of a virus leak.
A report by WHO and Chinese experts released on Tuesday, said the lab leak explanation was highly unlikely and the virus had probably jumped from bats to humans via another intermediary animal.
China has yet to respond to the WHO's latest statement.