Raid on huge network.
'German police have arrested three men and a fourth is being held in Paraguay for allegedly running one of the world's biggest online networks for sharing images of child sex abuse.
The international operation, involving several police forces, targeted a dark net platform called Boystown, which has now been taken down.
Officials say Boystown had more than 400,000 registered users.'
www.bbc.co.uk/news/world-europe-56969414