One of princess Amalia’s bodyguards caused a minor security stir at the 12-year-old’s school last month when she left her gun in the toilets, broadcaster Nos reports.

The incident, which has just been made public, happened on October 13 at the Sorghvliet school in The Hague, which the princess started attending in August. The gun was found by a fellow pupil at the school.

A police spokesman said the incident was a ‘human error that never should have happened’. The spokesman stressed that none of the pupils had touched the gun. ‘The pupil who found it in the toilets alerted the bodyguard immediately,’ the spokesman said.

No disciplinary measures have been taken against the officer involved.