A man has been arrested by police investigating "extreme" right-wing, Islamophobic and anti-Semitic postings on social media.
The 41-year-old was held in London this morning on suspicion of inciting racial hatred.
Scotland Yard said the man, who is from London, was arrested at approximately 6.30am as part of a pre-planned operation in north London by officers from the Crime Disruption Unit within the the force's Counter Terrorism Command.
They were supported by colleagues from the Territorial Support Group.