A Chinese virologist claims coronavirus was created in lab in Wuhan - and has vowed to publish proof that backs up her allegations.
Dr Li Meng-Yan, a researcher at the Hong Kong School of Public Health, had previously accused Beijing of covering up the outbreak in Wuhan.
The whistleblower says she was among the first people in China to study the pneumonia-like illness after it emerged in eastern China late last year.
But as cases appeared rose exponentially, she was told to "keep silent and be careful". "'We will get in trouble and we'll be disappeared'," her supervisor reportedly said.