MPS have demanded China come clean after a US official stunningly claimed the "most credible" origin of Covid-19 was a lab leak in Wuhan.
Senior Tory MPs Tom Tugendhat and Tobias Ellwood have called on the Government to probe allegations made by Donald Trump's security advisor Matthew Pottinger.
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China has long denied that the virus - which most scientists agree occurred naturally - may have escaped from its highest security lab, the Wuhan Institute of Virology.
The allegations come almost exactly a year since the virus first emerged in Wuhan just a stone's throw from the lab - infecting more than 85million people worldwide and killing almost 2million.
Mr Tugendhat, chair of the Foreign Affairs Select Committee, told The Sun Online the allegations are "extremely serious".
