A British man conned his way into an evening with a barrack of troops guarding Queen Elizabeth II at Windsor Castle last week.

According to The Guardian, the man pretended he was friends with the battalion’s Padre, Rev. Matt Coles, and also claimed to be a priest himself. He then spent the evening eating and drinking with senior officers before being offered a bed for the night.

The man offered no credentials to verify who he was and was still allowed inside in what is being called an “extraordinary breach of security.” When he was found out, police were called at 9:20 a.m. BST Wednesday, though he was not arrested.

A spokesperson told the Guardian that “officers attended and removed the intruder from the barracks” and “No further action was required.”

The army sent a statement to reporters that said it takes “this breach of security extremely seriously and it will be thoroughly investigated as a matter of priority. This incident is now part of an ongoing investigation and it would therefore be inappropriate to comment further.”

Though the Queen, 96, spends a lot of her time at Windsor, she was at her Sandringham estate at the time celebrating her birthday at the time of the incident.

The British Royals have had a myriad of close calls and scandals with security over the years that have prompted evaluations of the security details of buildings and individual members of the royal family.

The Band of the Coldstream Guards played 'Happy Birthday' at the Changing of the Guard at Windsor Castle
The Band of the Coldstream Guards played 'Happy Birthday' at the Changing of the Guard at Windsor Castle POOL via AFP / Jonathan Brady