The crossbow-wielding Windsor Castle intruder, 19, who 'wanted to assassinate the Queen' as his father says: 'Something's gone horribly wrong with our son and we are trying to figure out what'

 A teenager suspected of scaling Windsor Castle armed with a crossbow in a bid to 'assassinate the Queen in revenge for 1919 Amritsar massacre' has today been pictured for the first time.  

Jaswant Singh Chail uploaded a pre-recorded video to Snapchat at 8:06am on Christmas Day, 24 minutes before a man was arrested by police inside the grounds of Windsor Castle.

It has sparked a major internal security review at the estate looking at how someone could have got so far into the grounds.

Chail, who was raised in a £500,000 semi-detached house on a private estate in North Baddesley, Southampton, has now been pictured for the first time after his father, Jasbir Singh Chail, told MailOnline something had 'gone horribly wrong with our son and we are trying to figure out what'.

Mr Chail, 57, added: 'We've not had a chance to speak to him but are trying to get him the help he needs. From our perspective, we are going through a difficult time. We are trying to resolve this issue and it's not easy.'

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Jaswant Singh Chail uploaded a pre-recorded video to Snapchat at 8:06am on Christmas Day, 24 minutes before a man was arrested by police inside the grounds of Windsor Castle. It has sparked a major internal security review at the estate looking at how someone could have got so far into the grounds. Chail has now been pictured for the first time.

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Shocking video showing a crossbow-wielding man threatening to 'assassinate the Queen in revenge for 1919 Amritsar massacre' has emerged and is being investigated by the Met police

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Jaswant was raised in a £500,000 house on a private estate in North Baddesley, Southampton

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Armed police officers on guard at the Henry VIII Gate at Windsor Castle following the intruder getting in on Christmas Day

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Armed officers were guarding entrances to Windsor Castle following the security scare on Christmas Day after 8am

What was the 1919 Amritsar massacre, also known as the Jallianwala Bagh massacre?

The Amritsar massacre, otherwise known as the Jallianwala Bagh massacre, took place on April 13, 1919, during a protest against the arrest of two pro-Indian independence leaders.

It took place in a historic garden, called Jallianwala Bagh, close to the Golden Temple complex in Amritsar.  

Brigadier-General R. E. H. Dyer surrounded the protesters in response, leaving them with only one exit to get out of the Bagh. 

He then ordered his troops to shoot demonstrators, including those who were fleeing the massacre. 

On his orders, his soldiers only stopped firing when they had exhausted their ammunition.

Estimates of the death toll range between 379 and more than 1500. 

A further 1200 people were injured, among them 192 who sustained serious injuries. 

The massacre led to a re-evaluation of the British Army's use of force and soldiers were subsequently trained in less violent methods of crowd control. 

But it also led to a complete loss of trust in the British Army by Indian civilians and, some historians have argued, paved the way for Indian independence from British rule. 

Jaswant's father is a well-spoken, qualified software engineer who runs the company from his home.

Their son is believed to have enjoyed a comfortable, loving upbringing surrounded by his family in the middle-class district where they live, which is located just north of Southampton.

Known to friends as Jas, he is said to have used a filter to distort his voice and wore a hoodie and mask – an outfit thought to be inspired by Star Wars

He says: '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.

'It is also revenge for those who have been killed, humiliated and discriminated on because of their race. I'm an Indian Sikh, a Sith.'

He adds: 'My name was Jaswant Singh Chail' then appears to give a Star Wars-themed identity which sounds like 'Darth Janus'.

Sith appears to be a reference to the leading villains in Star Wars. A framed picture of Star Wars character Darth Malgus was visible in the background of the clip.

The Jallianwala Bagh massacre, or Massacre of Amritsar, saw 379 protesters killed and 1,200 wounded by British forces in India.

Alongside the video a message was also sent on Snapchat which said: 'I'm sorry to all of those who I have 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.'

The suspect, who police have not yet named, was arrested shortly after 8.30am yesterday after he was spotted on CCTV roaming the gardens after scaling an outer wall. He was later sectioned under the Mental Health Act.

Scotland Yard said detectives were examining the footage which was posted on social media before the Christmas Day incident at the Queen's Berkshire home.               

Police confirmed a crossbow was found after the intruder was detained in the castle grounds while the Queen was in residence. 

There is no indication the intruder, who has not been named, was known for making threats to any members of the Royal Family before this week.

And sources say that once he had gained access to the royal estate, the teenager 'didn't know what to do with himself' and was quickly arrested.

But it is clear that the incident is being taken extremely seriously. The Metropolitan Police is investigating and has informed the Home Office.

A Scotland Yard spokesman said: 'Following the man's arrest, detectives are assessing the contents of a video.'  

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Police confirmed a crossbow was found after the intruder was detained in the castle grounds while the Queen (pictured delivering the annual Christmas Day speech) was in residence 

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Crossbows are often referred to as 'lethal but legal' because they require no licence or registration and can be bought on the internet with ease.

Yesterday police searched the four-bed detached home in Southampton where the suspect lives with his family.

One neighbour told The Sun: 'There was a big commotion with all the police around and it caused some concern, especially as it was Christmas Day.

'The family keep themselves to themselves, like the rest of the estate, but we know there's a teenage lad who lives there with his mum and dad. The police didn't leave the estate until late at night.'  

Police will be looking at how the intruder was able to scale the spiked perimeter fence surrounding the Berkshire castle's grounds in the first place. 

It is believed he had a makeshift ladder to gain access from the Long Walk, which royals frequently use because of its proximity to the Queen's private apartments.

The Long Walk is located in an area of parkland that can be accessed by members of the public.

A major internal security review will be initiated as a matter of course, particularly as it follows a series of security scares on the Windsor Great Park estate involving Prince Andrew. 

In one incident a woman posing as a guest entered his home, Royal Lodge.

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Scotland Yard said detectives were examining the footage which was posted on social media before the Christmas Day incident at the Queen's Berkshire home

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Tourist stand in front of the Henry VII gate and take pictures at Windsor castle at Windsor, England on Christmas DaySenior royals, including the Duke and Duchess of Cambridge and the Duchess of Cornwall, have voiced concern after some of their most trusted police bodyguards were removed in a security shake-up.

Even the Queen has privately expressed disquiet over changes to the way she and her family are protected, sources said.

The latest security scare took place after the suspect with the crossbow was found at 8.30am on Christmas Day, when the Queen would have been at Windsor without her family.

Within hours she was joined by a number of senior royals including the Prince of Wales, Duchess of Cornwall and the Earl and Countess of Wessex.

Retired chief superintendent Dai Davies, the former head of royal protection at Scotland Yard, said the incident again highlighted the 'very serious threat' that 'fixated people and stalkers' pose.

He said: 'Since the time of George III, 99 per cent of attacks against members of the Royal Family have involved a fixated person, or stalker. And the news that a crossbow was involved actually scares me. They will go through a windscreen.

'And in all my years of crime and catching criminals, it is rare for crossbows to be used for criminal purposes. Anyone knowing the royals were in residence and having a fair idea of their comings and goings, could pose a very real and potentially tragic threat with something like that.'  

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The Prince of Wales and the Duchess of Cornwall, the Earl and Countess of Wessex and the Duke and Duchess of Gloucester have arrived for the Christmas Matins service in Windsor Castle

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Sophie and Edward were accompanied by their daughter Lady Louise and son James, Viscount Severn. The royals were greeted at the entrance by the Dean of Windsor before moving inside for the morning service

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The Duke and Duchess of Gloucester arrive to attend the Christmas Day morning church service at St George's ChapelBut he cautioned: 'It is always a balance between public accessibility to the Royal Family and their ability to live even the semblance of a normal life, with their safety. You can't turn these royal residence into prisons. And royalty protection is like an onion.

'There are layers. There would have been a lot of other obstacles for him to get through before he even got near a member of the Royal Family. It is clear he was picked up by CCTV and apprehended at the first possible opportunity. Troubling as the incident is, in this case the security worked.'

In a statement the Metropolitan Police said: 'A 19-year-old man from Southampton was arrested on suspicion of breach or trespass of a protected site and possession of an offensive weapon.

'Security processes were triggered within moments of the man entering the grounds and he did not enter any buildings.

'Following a search of the man, a crossbow was recovered. The man was taken into custody and has undergone a mental health assessment. He has since been sectioned under the Mental Health Act.

'Enquiries into the full circumstances of this incident are being progressed by Metropolitan Police Specialist Operations.'

Security at Windsor Castle has been beefed up in recent years, sources have said. A review was carried out in 2003 after self-styled comedy terrorist Aaron Barschak broke in during Prince William's 21st birthday party.  

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Heightened security inside the grounds of Windsor Castle on Boxing Day after a intruder broke into the grounds on Christmas Day

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A major internal security review will be initiated as a matter of course, particularly as it follows a series of security scares on the Windsor Great Park estate involving Prince Andrew

'Comedy terrorist' who gatecrashed Prince William's 21st birthday party 

This is not the suspected security breach to have taken place in the grounds of Windsor Castle.

In June 2003, self-styled 'comedy terrorist' Aaron Barschak came to national fame by gatecrashing Prince William's 21st birthday party at Windsor.

During the affair, Barschak wore a pink dress, a false beard and a turban in a fashion similar to Osama bin Laden.

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In June 2003, self-styled 'comedy terrorist' Aaron Barschak came to national fame by gatecrashing William's 21st birthday party at Windsor. During the affair, Barschak wore a pink dress, a false beard and a turban in a fashion similar to Osama bin LadenAfter flashing his merkin at the crowds outside, he scaled the walls of the castle and entered the young prince's party.

Sources told The Guardian at the time that CPS lawyers decided there was 'insufficient evidence' to charge Barschak for one or more of four offences – burglary, threatening behaviour, criminal trespass and assault.

After learning he would face no action, the 'comedy terrorist' claimed his stunt had brought him celebrity status.

In an interview with LBC News, he said: 'I don't speak to any of my friends anymore. I'm far too famous for them. I get people in the street coming up to me and it's a terrible strain.'

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After learning he would face no action, the 'comedy terrorist' claimed his stunt had brought him celebrity status

Barschak claimed that he was challenged and escorted to a police point after breaking into the grounds, but was allowed into the party area after giving what the Met Police described as a 'credible story'.

At least nine police officers were under disciplinary investigation over the incident. 

Chief Inspector Mark Goddard, a senior officer who was in charge of security at Windsor, was moved from his position.