A man arrested with a knife outside Buckingham Palace in London on Tuesday has been admitted to the closed psychiatric hospital. The 59-year-old had thrown cartridges over the palace fence and was carrying a knife.

His backpack was blown up with a controlled explosion as a precaution. The background to this was that he had advised the officers to handle the backpack with care during his arrest, according to a report by the British news agency PA.

The incident caused a great deal of excitement. However, the police quickly ruled out a terrorist background. The royal couple were not in the palace at the time.