Hacking group Anonymous has claimed to have stopped an Islamic State terror plot in Italy, though no details of the plan have emerged.
The 'hacktivist' group has stepped up their campaign against the group's social media accounts, which it uses to spread its propaganda and recruit new members, since the attacks in Paris in November.
Their campaign included an 'ISIS Trolling Day' on December 11 in which a number of IS fighters were photoshopped into rubber ducks holding toilet brushes.
In a YouTube video and a series of tweets, the group says it uncovered details of a plot which counter-terrorists had subsequently stopped.
Italian authorities have not released any details of the alleged plot, The International Business Times reports.
In the YouTube video, a person wearing a Guy Fawkes' mask which has come to symbolise the group, declared was on IS.
"We will launch the biggest operation ever against you. Expect massive cyber-attacks. War is declared. Get prepared. The French people are stronger than you and will come out of this atrocity even stronger," the man says in French.
Since the Paris attacks, the group has taken down thousands of IS-linked Twitter accounts, and have also attacked websites and apps the group uses to discuss attacks and recruit members.