London’s Metropolitan Police Service said it arrested two unnamed men in connection with a break-in at Buckingham Palace Sept. 2. According to officials, one of the suspects scaled a fence outside the palace, the Guardian reported.

Scotland Yard did not reveal exactly where this suspect was found, but it did say he was in an area that is normally open to the public during the day. The first suspect, 37, was arrested for burglary, trespassing and criminal damage. The second suspect, 38, was arrested outside the palace for conspiracy to commit burglary.

A complete security review has been launched to investigate the incident. But officials believe the first suspect kicked down a weakly secured door and entered one of the 19 state rooms in the palace.

“Police arrested two men following an incident in the vicinity of Buckingham Palace at approximately 22.20 hrs on Monday, 2 September,” the Guardian quoted a Scotland Yard representative as saying Saturday. The rep added that both suspects “have been bailed to return to a central London police station and enquiries continue.”

No members of the British royal family were in the residence at the time of the break-in.