London Telegraph 
Aug 8, 2011
Twitter users could face arrest for inciting violence in the wake of two nights of unrest in London, a Scotland Yard chief warned today.
Deputy Assistant Commissioner Stephen Kavanagh confirmed officers were looking at the website as part of investigations into widespread looting and rioting.
Some messages posted on Twitter surrounding the riots had been “really inflammatory, inaccurate”, Mr Kavanagh added.
When asked by reporters whether officers would consider arresting tweeters in relation to incitement to violence, Mr Kavanagh said “absolutely”.
He later added: “That investigation is already under way and that is exactly the sort of thing we are looking at.”