The images that Nelson made have been linked back to real children around the world. In some cases, he then went on to encourage his clients to rape and sexually assault the youngsters.
An analyst who removes child sexual abuse content from the internet says she is always trying to stay "one step ahead" of the "bad guys".
Young children are now more exposed to being groomed online due to a reliance on tech devices in lockdown, a charity has claimed.
Online child sexual abuse is at record high levels, according to exclusive figures given to ITV News.
The government says it is leading the way with its crackdown on AI-generated abuse images, after warnings the content was being produced at a "chilling" rate.
A rise in child sex abuse material has been linked to websites hosted in EU countries, according to the Internet Watch Foundation (IWF).
An increase in sophisticated AI-generated images of child abuse could result in police and other agencies chasing "fake" rather than genuine abuse, a charity has said.
Digital fingerprints of a million images of child sexual abuse have been created, the Internet Watch Foundation (IWF) has said.
IWF warns of more AI-made child sexual abuse videos as tools behind them get more widespread and easier to use
Watchdogs say its a "stark vision of the future."
More children than ever are becoming victim of online sexual abuse, with technology offering abusers more access to them than ever.
Last year was the “most extreme year on record” for child sexual abuse online, UK based charity Internet Watch Foundation warned.