A man has been arrested at Buckingham Palace on suspicion of carrying a firearm.
The man was detained by palace security this afternoon at one of the building's visitor entrances.
Sky News reports that he was carrying an electroshock Taser weapon.
Scotland Yard said that the incident is not believed to be terror-related.
A statement reads: "Police were called at 12:47hrs on Sunday, 23 September to a report of a man detained by security staff at the visitor entrance to Buckingham Palace.
"Officers attended and at 13:00hrs a 38-year-old man was arrested on suspicion of possessing a firearm, namely a Taser.
"He remains in custody at a central London police station at this stage."
