A man was arrested after approaching the coffin of Queen Elizabeth II from a long queue of mourners at Westminster Hall.
According to the Metropolitan Police, he was taken into custody after being detained under the Public Order Act.
According to a statement from the police, the incident in Parliament happened at around 22:00 BST on Friday.
The live video feed of the Queen lying in state cut away for a brief period during the incident.
A statement from Scotland Yard said: “Around 22:00 on Friday 16 September officers from the Met’s Parliamentary and Diplomatic Protection Command detained a man in Westminster Hall following a disturbance.”
A Parliament spokesperson said: “We’re aware of an incident in Westminster Hall, in which a member of the public moved out of the queue and towards the catafalque. “They have now been removed from the hall and the queue restarted with minimal disruption.”
The King participated in a vigil in the hall earlier in the evening along with his siblings Princess Anne, Prince Andrew, and Prince Edward.
The late Queen Elizabeth II will remain in repose in Westminster Hall till Monday, the day of her funeral.