The Covid-19 virus is most likely to have originated from a laboratory leak in China, a US government report has concluded.
The US Department of Energy said it carried out the study on the basis of new intelligence and claimed its report - which has been provided to the White House and key members of Congress - can be relied upon due to the agency's scientific expertise and involvement in a network of US national laboratories, some of which conduct advanced biological research.
The Federal Bureau of Investigation (FBI) has also claimed that the Covid-19 pandemic can be traced back to a leak from a Chinese laboratory, but four other US agencies still believe the pandemic was the result of natural transmission. It is understood that the CIA is among the agencies that remain undecided, reports the Wall Street Journal.