Xinhua News Agency
The cause of the sudden collapse was under investigation, officials said.
He Jiankui, the lead researcher, shocked the scientific world when he announced in November 2018 that he had altered the embryos of twin girls.
Teachers at a Beijing school allegedly forced children to take pills, jabbed them with needles and made them strip naked.
βThat is a grave threat not only to the safety and security of the United States, but that of others worldwide."
