An anonymous reader points out that UK authorities have warned that sharing the video of the James Foley murder could lead to prosecution under anti-terror laws. Scotland Yard has warned internet users they could be arrested under terrorism legislation if they viewed or shared the video of James Foley's murder, as Twitter and YouTube attempted to remove all trace of the footage from the web. Twitter suspended dozens of accounts that published the graphic footage while YouTube tried to remove several copies of the video, which was first uploaded on Tuesday night. Twitter CEO Dick Costolo tweeted: "We have been and are actively suspending accounts as we discover them related to this graphic imagery. Thank you." The unprecedented social media clampdown came as the Metropolitan police warned that even viewing the video could constitute a criminal offence in the UK. The force said in a statement: "The MPS counter-terrorism command (SO15) is investigating the contents of the video that was posted online in relation to the alleged murder of James Foley. We would like to remind the public that viewing, downloading or disseminating extremist material within the UK may constitute an offence under terrorism legislation."