Scotland Yard has confirmed two men were arrested "following an incident in the vicinity of Buckingham Palace" on Monday evening in a statement to The Sun.
Police arrested two men following an incident in the vicinity of Buckingham Palace at approximately 22.20 hours on Monday, 2 September.
Both men have been bailed to return to a central London police station and enquiries continue.
A review of the specific circumstances of this incident has been carried out.
A man has broken into Buckingham Palace sparking a major security alert - he was was arrested inside the Queen's home earlier this week.
Last Monday's break-in at Buckingham Palace is the latest in a series of security scares involving the Royal Family.