Russia has “systematically relocated” possibly more than 6,000 children from Ukraine to several re-educating and adoption facilities in occupied Crimea and mainland Russia, which could be considered a war crime, the Yale School of Public Health’s Humanitarian Research Lab (HRL) warned.

Russian special forces rescued a seven-year-old boy who was kidnapped in September near his school in Gorki after an unnamed U.S. intelligence agency scouring hidden areas of the internet found a link between the boy and a user of the dark web.