• A 19-year-old man was arrested in Windsor Castle, where Queen Elizabeth and her family were staying for the holidays
  • Police found a crossbow after searching the man
  • A video linked to the suspect showed a masked man threatening to "assassinate" the Queen

A 19-year-old man who broke into Windsor Castle in England on Christmas morning reportedly brandished a crossbow and threatened to "assassinate" Queen Elizabeth II.

Police are investigating a video linked to the Southampton man who was arrested on the grounds of Windsor Castle Saturday as Queen Elizabeth and members of the royal family, including Prince Charles and Camilla, Duchess of Cornwall, celebrated Christmas at the royal residence. Officers with the Thames Valley Police found a crossbow after searching the man.

The footage, obtained by The Sun, showed a masked person in a hoodie who held a crossbow and introduced himself as Jaswant Singh Chail. The outlet said the video was sent to friends from the suspect's Snapchat account 24 minutes before he was arrested on castle grounds.

"I'm sorry. I'm sorry for what I've done and what I will do. I will attempt to assassinate Elizabeth, queen of the royal family. This is revenge for those who have died in the 1919 Jallianwala Bagh massacre," the man said in a distorted voice, referring to the Massacre of Amritsar in India, where British troops killed 379 unarmed protesters and wounded around 1,200 on April 19, 1919.

"It is also revenge for those who have been killed, humiliated and discriminated [against] because of their race," the suspect added. "I'm an Indian Sikh, a Sith. My name was Jaswant Singh Chail, my name is Darth Jones."

In "Star Wars," the Sith are the enemies of the Jedi Knights and worship the Dark Side of the Force.

The suspect added that he did not expect to survive the attack on the Queen.

In a message sent on Snapchat alongside the video, he apologized to those he had wronged or lied to. "If you have received this then my death is near. Please share this with whoever and if possible get it to the news if they’re interested," he added.

The man was nabbed by officers about 500 meters from the Queen's private apartments inside Windsor Castle. He apparently used a rope ladder to scale a metal fence to enter the gardens at the residence, according to the outlet.

In a statement, Thames Valley Police Superintendent Rebecca Mears said that security processes were triggered within moments of the man entering the grounds and that the suspect did not enter any buildings.

The man was held on suspicion of breach or trespass of a protected site and possession of an offensive weapon.

After being taken into custody, the suspect underwent a mental health assessment. He has since been sectioned under the Mental Health Act and remains in the care of medical professionals, police said.

An investigation into the incident is ongoing.

The Queen was in her private apartments when the security breach happened, according to The Sun. Her Majesty was believed to have been accompanied by as many as 20 family members in the castle, including Mike and Zara Tindall, Prince Edward and Sophie, Countess of Wessex, Princess Beatrice, Princess Eugenie and their respective families.

Queen Elizabeth II, 95, 'believes you are as old as you feel', her assistant private secretary said
Queen Elizabeth II, 95, 'believes you are as old as you feel', her assistant private secretary said POOL / Frank Augstein