Counter-terrorism: Alarms must go off at Facebook, says Clegg
Deputy Prime Minister Nick Clegg has said internet companies must co-operate with the government to deal with the threat of terrorism.
He said social media organisations should have the procedures in place to deal with blogs or postings that contain potentially dangerous information.
His comments come as a former MI6 director says it is "unfair" to ask firms such as Facebook to check all website postings for possible terrorist content.
An MPs' report published on Tuesday said an unnamed company, now known to be Facebook, could have done more to prevent Fusilier Lee Rigby's death.
26 Nov 2014