An investigation is under way into an alleged break-in at the Houses of Parliament.
The Metropolitan Police received reports of a forced entry to an office in the Palace of Westminster just before 7pm on Friday.
A Scotland Yard spokesman said: "Police were contacted at 6.55pm regarding an alleged forced entry to an office in the Palace of Westminster. Inquiries continue."
UPDATE:
A police investigation into an alleged break-in at the Houses of Parliament is believed to be centred on the suite of offices used by Labour leader Ed Miliband.
Scotland Yard received reports shortly before 7pm last night of a forced entry to the premises in the Norman Shaw buildings - which were the force's own headquarters until 1967.
It is understood that a member of the Opposition leader's staff found a door had been forced but it is unclear whether anything was missing from the room.
The incident is not thought to involve the large office used by Mr Miliband himself, who was not present at the time, having attended a party conference in the Midlands.
A spokesman said: "There is an ongoing police investigation. It would be inappropriate to comment."
A Scotland Yard spokesman said: "Police were contacted at 6.55pm regarding an alleged forced entry to an office in the Palace of Westminster. Inquiries continue."