The video, obtained by the British newspaper 'The Sun', shows a masked person holding a crossbow and saying that "he will try to kill Isabel, the queen of the royal family" in a mission "of revenge".

The masked also alludes to the Amritsar massacre-also known as the Jallinwala Bagh massacre-, occurred in the Indian city of Amrtisar, when soldiers of the British Indian army loved a multitude of thousands of men, women and children unarmed.

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— granny Fri Nov 06 23:55:36 +0000 2015

Police have confirmed that "evaluates" the video, according to the Sky News chain, but has rejected identify the person who appears in the video and the detained individual.Buckingham Palace has also declined to comment.

The 19 -year -old and originally from Southampton, was arrested on Christmas day at 8.30 hours "moments later" to access the enclosure.Could not access any of the buildings.In the registry a crossbow was found.Queen Elizabeth II was at that time at Windsor Castle, although Christmas was usually spent in Sandringham, in Norfolk.