Second woman carrying gene-edited baby, Chinese authorities confirm

Police to investigate He Jiankui after last year's claim to have altered the DNA of twin girls

A second woman became pregnant during the experiment to create the world's first genetically edited babies, Chinese authorities have confirmed, as the researcher behind the claim faces a police investigation.

He Jiankui shocked the scientific community last year after announcing he had successfully altered the genes of twin girls born in November to prevent them contracting HIV.