The Ministry of Defence (MoD) said in a statement on X: "It is with great sadness that we can confirm the deaths of Lieutenant Commander Chris Gayson and Lieutenant Lily-Mae Fisher of 846 Navy Air Squadron, and Petty Officer Owen Green of 845 Navy Air Squadron, who died in Devon during routine training activity on 3 June."
Lt Fisher was Britain's only serving female commando.
The three were on board a Merlin Mk4 helicopter which crashed during a training exercise early on Wednesday.
Police said emergency services were notified at around 3.45am after reports of a crash at Sourton Down, near Okehampton, Devon.
Members of the UK armed forces have started paying tribute to the three killed in the crash.
Commanding Officer of Commando Helicopter Force, Colonel Will Penkman, said: "It is a tragedy that we lost three members of the CHF family yesterday.
"Cherished members of the force with bright futures ahead of them, they were all highly committed professionals infused with the Junglie spirit of the force.
"Their loss leaves a terrible gap in our hearts and my thoughts go out to their family and friends who dearly loved them."
The MoD said Lt Fisher, Lt Cdr Gayson and Petty Officer Green were based in Yeovil, Somerset.
The Royal Navy's two air bases are located close to Devon. RNAS Culdrose, one of Europe's largest helicopter bases, is near Helston in Cornwall, while RNAS Yeovilton in Somerset houses more than 100 aircraft.
The scene of the crash was close to Okehampton battle camp, a military facility on the edge of Dartmoor which has been used for training Merlin helicopter crews from the Commando Helicopter Force.
Merlin helicopters usually have a crew of four and can carry up to 24 troops.
In a statement, Prime Minister Sir Keir Starmer said he was "deeply saddened" by the crash, and later described the incident on social media as "utterly tragic".
Defence Secretary John Healey said he was "devastated" at the three deaths of personnel who "served with excellence and will be much missed".
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A 21-year-old Saudi national has been arrested on suspicion of attempted murder and taken into custody while police carry out an investigation.
Officers were called to reports of a shooting at Manor Park Student Village, Guildford, at around 10am this morning.
The suspect, who was a former student at the university, was detained at the scene soon after and police say they are working closely with university authorities.
A University of Surrey spokesperson said that the incident took place at around 9.50am and that a member of the campus safety team was "seriously injured".
Police have appealed for information and witnesses to come forward.
The victim remains in hospital in a serious condition, police said.
Chief Superintendent Jon Groenen said: "I appreciate that this incident will cause concern amongst our local communities, and I can reassure that we are not looking for anyone else in relation to this incident.
"We are working closely with the university as our investigation progresses.
"The suspect was detained at the scene shortly after the incident and an investigation is now underway to establish the circumstances of the assault."
He continued: "The victim remains in a serious condition in hospital and his next of kin are aware and are being supported by officers."
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While the university's campus is fully open, a significant emergency services presence remains in place.
Located in the west of Guildford, Manor Park is home to flats housing between three and nine students.
The University of Surrey describes the campus as having its own launderettes, study space, common rooms, and a modern Manor Park Social bar.
Zulkernain Ahmed was driving down the wrong side of the road when he hit 16-year-old pedestrian Abdullah Yaser Abdullah Taleb so hard he was thrown into the air by the impact in the Darnall area of Sheffield on 4 June last year.
Ahmed, who admitted manslaughter, was found guilty of murder at the city's crown court in February.
His brother, Armaan Ahmed, who was a back-seat passenger in the vehicle, was jailed for 17 years for manslaughter after being cleared of murder, a charge that both had denied.
Prosecutors said Zulkernain Ahmed used his car as a "weapon" against Abdullah, who the judge said was "in the wrong place at the wrong time" as he walked along the pavement in Staniforth Road.
Jurors were shown footage of the grey Audi driven by Ahmed colliding with a man who the prosecution said was e-bike rider La'rome Divers.
He was knocked over a hedge, before the car then hit Abdullah, who died later in hospital.
Zulkernain Ahmed was also convicted of causing Mr Divers grievous bodily harm with intent and attempting to cause two unidentified riders GBH with intent.
The defendants, from Darnall, were out looking for Mr Divers, who was riding with two others - one on a moped and the other on another e-bike, over a dispute about e-bikes, the court heard.
Sentencing the pair on Thursday, the anniversary of Abdullah's death, Mrs Justice Tipples said of the victim: "He was tragically in the wrong place at the wrong time."
She added that Abdullah's "senseless and shocking death has been devastating for his parents, sisters and wider family and friends", adding that their lives have been "changed forever by this terrible and tragic murder".
Murder 'destroyed the entire family'
Sheffield Crown Court heard a statement from Abdullah's father, Yaser Abdullah Taleb Al Yazidi, who said his son's death had "destroyed the entire family".
He said his son had come to Sheffield from Yemen just two months before he died "in search of safety and for a better life".
"He was eager to learn and integrate into the community. He was very intelligent, always smiling, quick to learn and loved by everyone," Mr Yazidi added.
Detective Chief Inspector Ben Wood, of South Yorkshire Police, confirmed a third Ahmed brother, Zain, who was in the front passenger seat of the Audi, has not been traced by police.
'Horrendous and really tragic'
Det Ch Insp Wood said the footage of the attack was "horrendous and really tragic" and Abdullah was a "purely innocent boy".
"For anybody to lose a life over an e-bike is absolutely tragic, and no reason whatsoever for somebody to lose their life.
"I would say that the manner of the driving was absolutely outrageous... they're trying to deliberately use the vehicle as a weapon to drive at people," he said.
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Christi Hill left Hampshire Constabulary in April 2024 but was falsely named by Grok, on the X social media platform, as one of two officers in bodycam footage of Nowak's arrest in December 2025.
She says she has since been subjected to online abuse and has been moved by the force to a safe location.
It comes after Home Secretary Shabana Mahmood said on Tuesday that a male police officer wrongly identified as being involved in the case had been forced to relocate to protect himself and his family.
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Ms Hill wrote on LinkedIn: "I am writing this post with a heavy heart, both out of deep sadness for a tragic event and out of a necessity to protect my reputation, safety and peace of mind.
"Today, my name and image have been widely circulated on social media, and now by AI platforms such as Grok, falsely identifying me as one of the arresting officers in the Henry Nowak case.
"To be absolutely clear, I was not involved in this incident. In fact, I left Hampshire Constabulary in April 2024. The tragic events involving Henry Nowak occurred in December 2025.
"The confusion stems from a national police bravery award media release. A photo of myself and a former colleague who has also been wrongfully targeted is being repeatedly shared and misattributed to this case.
"It is alarming to see how quickly a piece of outdated media can be weaponised by algorithms and accepted as fact by AI platforms, despite being factually impossible.
"It is deeply unsettling to have my name wrongly attached to such a high-profile and sensitive matter whilst there has been a clear lack of support from Hampshire Constabulary in rectifying this false narrative in a timely manner.
"My primary thoughts remain with the family affected by this tragedy. They deserve justice and clarity, not the noise of online misinformation. I kindly ask my network to help share this clarification."
The false Grok post, which appears to have since been taken down, had said: "Public reports and identifications in the Henry Nowak bodycam footage name **PC Christi Hill*..." The post went on to name a second officer and said a third was unidentified.
The officers who arrested Mr Nowak have been taken off frontline policing duties, the chief constable of Hampshire Police told Sky News.
Footage of Mr Nowak being handcuffed as he lay dying on the ground, in Southampton, has sparked protests and intense national debate.
He was stabbed to death by 23-year-old Vickrum Digwa on his way home from a night out.
Digwa, who was jailed for life, had told police Mr Nowak had racially abused him, which was described by the judge as "wicked lies".
Sir Keir Starmer and Nigel Farage clashed over allegations of "two-tier policing" during PMQs on Wednesday.
Hampshire Police said in a statement: "We know there has been significant commentary following the sentencing of Vickrum Digwa, and we recognise the desire for answers about the police response that night.
"However, what we cannot accept is the significant spread of misinformation online by those intent on causing further fear and division by making threats to officers and sharing names that are simply not true.
"A police officer unrelated to this case has been misidentified online and subject to death threats.
"The Independent Office for Police Conduct (IOPC) is continuing its independent investigation into our response on the night in question, following our self-referral the next day. While that progresses, we ask that people avoid harmful speculation online."
Sky News has approached X for a response.
The prime minister said Jess Asato "is absolutely right in the action she is taking" .
He added: "Disgusting images were created, in her particular case by Grok.
"I am really pleased that we took Grok on a few months ago, because that is the fight we should be in, taking on some of these platforms providers [and] some of these disgusting images, really disgusting. We won that.
"But Jess is right, she is a parliamentarian. I am 100% behind the action that she has taken."
He also accused Musk of "interfering in our politics in the last few days, trying to whip up division. That is not who we are in Britain."
He added: "In Britain we are reasonable, tolerant people. When we have a terrible case like Henry's case, Henry Nowak, we react calmly as his family has done.
"When it comes to disgusting images on Grok, we take Grok on and fight because that's who we are as a country."
Ms Asato claims that Grok users created and shared fake images depicting her in a bikini, as well as a video showing her "being chloroformed and prepared for a sexual assault", after she criticised the chatbot in January.
The MP for Lowesoft said she filed a claim at the High Court on Wednesday in a bid to seek accountability for the design choices that allowed Grok to create such images.
She is seeking damages, but also wants to set a precedent for companies to be liable for the design of AI systems and to create "better guardrails" for tech companies in the future.
Speaking to Sky's Cathy Newman, she said seeing the images of herself was "Scary. Demeaning. Humiliating."
She added: "I'm going to try and prove that under our current and existing law that we have rights over our own image.
"And at the essence of my case is a breach of privacy, and also a breach of data protection. Because I never consented for those images to be manipulated by AI and then shared back to me to humiliate me and silence me. And I think there needs to be a new standard and understanding of what our image rights are in this country.
"I hope that if we win this case, that will actually create some sense of control, not just for women and girls, but for everybody."
Following the backlash over xAI earlier this year, the company said its users would no longer be able to use Grok to generate sexualised images of real people.
It has since become illegal to create or request a non-consensual deepfake of an adult in the UK.
The claim filed at the High Court on Wednesday is being brought under the Data Protection Act and for tortious misuse of private information.
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Ms Asato's solicitor, Ravi Naik of the law firm AWO, said: "Where there is a wrong, the law must provide a remedy, and that is as true of artificial intelligence as of anything else.
"No one should be subjected to abuse like this, and no one should have to instruct a lawyer to get images like these taken down.
"This content existed because of design choices made by engineers at xAI. It is built deliberately.
"This is one of the first claims to test liability for the design of an AI system, and we aim to make it clear that safety cannot be an afterthought. Ms Asato has shown real courage in stepping forward."
xAI has been approached for comment.