Transcript for Prince Andrew Mistaken as Intruder at Buckingham Palace
Now to the royal mistake at buckingham palace. Anxiety high after an intruder got through security. That created an uncomfortable moment for prince andrew. He was confronted by police and demanded his i.D. While out for an evening stroll. Reporter: A security blunder of royal proportions. Two armed police stopping prince andrew if the queen's garden. British tabloids report that officers ordered a livid duke of york to put hands up and get to the ground. Reporter: In an apology to the queen's son, police say weapons were not drawn and no force was used. Over the weekend, prince andrew said he accepted the apology. Despite his good humor, it's not laughing matter. It demans explanation. It demands someone to say how could this happen in 2013? Reporter: Just days earlier, an intruder was stopped inside buckingham palace after scaling a 12-foot barbed wire wall. He kicked a door in near where the crown jewels are on display. The palace is supposed to have multiple layers of security. Tand are there to ensure that both outer and inner cordons are enforced and reacted to. Reporter: Many are wondering if those defens, at what is supposed to be one of the most secure buildings in the world, are really as secure as they should be. This was the most serious palace bree breach in years. A man climbed a fence and a drainpipe near the queen's bedroom a few yers ago. That may have been more serious. I think, more embarrassing. I can't believe the first one is possible. Thank you, bbianna.
This transcript has been automatically generated and may not be 100% accurate.