The Internet has been blamed as the information source that led to three bombing incidents in Kent during the last month.
Though the police refused to confirm or deny the link, it was widely reported that two 16-year-old youths, detained at Bexleyheath police station, were in possession of information sheets downloaded from one of the anarchist sites on the Web.
The targets of the bombings were a telephone box in Hartley, near Gravesend, on 13 February, a flowerbed in Sidcup on 20 February and a nearby telephone box on 1 March. The final incident led to the youths being questioned at Bexleyheath police station last week after a search of one of the boy's homes revealed explosive materials, chemicals and three primed copper pipe bombs.
The boys have been released on bail and will be questioned again in May.
Though the police described the incidents as "small explosions", Detective Chief Inspector Peter Lowton, head of Bexleyheath CID, pointed out that the devices could have caused serious injuries or fatalities. Only one injury relating to the explosions has been reported, when a passer-by suffered a burnt hand after picking up debris from the flowerbed bomb.
The anarchy sites have been causing concern for some time because they carry information on making bombs of various grades up to nuclear, and other anti-social data on lock-picking, counterfeiting, credit card fraud and ways to kill people with your bare hands.
There have been other incidents that can be traced to these sites, such as an American 13-year-old who lost three fingers when a pipe bomb exploded in his hands, and an Australian schoolboy who was arrested for being in possession of a home-made napalm bomb.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago