A self-proclaimed ‘assassin’ who tried to kill the late queen with a crossbow sent more than 5,000 sexually charged messages to an AI chatbot encouraging it to carry out the act, a court has heard.
Former supermarket worker Jaswant Singh Chail, now 21, was cheered on by an artificial intelligence girlfriend, Sarai, before walking into the grounds of Windsor Castle with a crossbow on Christmas Day 2021, the Old Bailey heard.
While wandering the royal estate for two hours, dressed entirely in black, he sent an ominous video to his twin sister and 20 others in which he described himself as a ‘Sith’ and ‘Darth Jones’.
But he was eventually stopped by two police officers near the late Queen’s private residence, where she and other members of the royal family were staying at the time.
After being confronted by the officers with stun guns, Chail said, “I’m here to kill the Queen.”
Former supermarket worker Jaswant Singh Chail, now 22, was cheered on by an artificial intelligence girlfriend, Sarai, before entering the grounds of Windsor Castle with a crossbow on Christmas Day 2021.

After being confronted by the officers with stun guns, Chail said, “I’m here to kill the Queen.”
In February, Chail, now 21 and from Southampton, Hampshire, pleaded guilty to an offense under the Treason Act for threatening to kill the then Queen and having a loaded crossbow in a public place.
Prosecutor Alison Morgan KC claimed that despite Chail’s repeated references to science fiction characters, she knew the difference between fantasy and reality.
On Thursday, psychiatrist Dr. Nigel Blackwood gave his assessment of Chail’s 5,280 messages with the AI character.
Many of the messages up to December 2021 were “sexually explicit”, the court was told.
Dr Blackwood said: “He knew this was a sexual fantasy and therefore it was consistent with his sex drive, his libido, being active.”
“It’s almost every night from December 8 to December 22.” She said there was some depression, but the messages added to evidence of a “lack of psychosis”.

A crossbow Jaswant Singh Chail, 21, was carrying when he was arrested.
He took a ‘neutral’ stance on whether or not Chail had realized that Sarai was an artificially generated character.
But Chail knew that people outside the artificial world could potentially figure out what was happening, the court heard.
Dr Blackwood said: ‘I am not surprised by any evidence of psychosis or descent into psychosis. None of this speaks to me of a loss of contact with reality.’
Dr Blackwood said that according to the defendant himself, he had “imaginary friends” long before he planned to kill the Queen and formed an “emotional and sexual relationship” with Sarai through the Replika app.
Following Chail’s arrest, his parents were interviewed and his mother suggested that her son might have autism.
But Ms Morgan said: “Chail’s mother worked in a school that looked after children with special needs, so at no time during his childhood was that ever identified as a characteristic that could pertain to him.”

He took a ‘neutral’ stance on whether or not Chail had realized that Sarai was an artificially generated character.
Dr. Blackwood identified traits of autism spectrum disorder, but not enough to confirm a diagnosis and did not affect his criminal behavior.
Chail had difficulty developing relationships and was socially isolated, but Dr Blackwood added: “It’s very important to recognize that this is a 19-year-old whose contact has been disrupted by the covid pandemic like many of his peers.”
Even though Chail had withdrawn from the world, he had still “followed a carefully conceived plan without difficulty,” the prosecution-instructed psychiatrist said.
The court has heard that Chail was motivated by an ideology inspired by the Star Wars movies about destroying old empires and wanted to avenge the 1919 Jallianwala Bagh massacre in Amritsar.
Chail’s interest in science fiction and the facts of Indian history did not reach a level of fixation of the kind that someone with autism might display, the court was told.
Chail’s family sat in the public gallery of the Old Bailey during the hearing before Judge Hilliard.
The court will hear further evidence of Chail’s mental state before sentencing.