LONDON (AP) — Police say they've arrested two men over a suspected break-in at Buckingham Palace, a rare breach of royal security.

London's Metropolitan Police says the incident occurred on Monday night after one of the men scaled a fence outside the stately residence.

The man wasn't named, and police did not say where exactly amid the palace's 775 rooms he was found. The force did indicate it was in an area of the palace usually open to visitors during the day.

Police said that the man was arrested on suspicion of burglary, trespass, and criminal damage. The second man was arrested outside the palace on suspicion of conspiracy to commit burglary.

Police said Saturday that no members of the royal family were at the palace at the time.