A man has been arrested by counter-terror police on suspicion of spying.
The suspect, in his 40s, was detained by the Metropolitan Police at Gatwick Airport in London on Monday evening.
The Sun newspaper reported that the man is accused of spying in Britain for Russian President Vladimir Putin, and was due to get an outbound flight when he was arrested.
A Scotland Yard spokesman said: "We can confirm that officers from the Met's Counter Terrorism Command arrested a man in his 40s at Gatwick Airport on Monday, June 13, on suspicion of offences under Section One of the Official Secrets Act 1911.
"He has been taken to a London police station, where he currently remains in police custody.
"Inquiries continue."
Section One of the Act relates to information contained within notes, plans or sketches which may be useful to an enemy.
