The World Health Organization’s leader said the Chinese government failed to provide access to biological data from as early as September 2019 to COVID-19 origins investigators and argued the joint WHO-China inquiry did not conduct an extensive enough assessment of a possible Wuhan lab leak.

Officials from both the Trump and Biden administrations have said that the Chinese government worked for over a year to thwart an independent investigation into the origins of the virus, which has killed 2.79 million people worldwide, and both administrations cast doubt on the manner in which the WHO-China study was conducted in early 2021. The highly anticipated and deeply controversial 120-page report was made public on Tuesday morning ahead of a press conference by the WHO’s investigative team.