Here's everything we know about the horrific stabbing which took place onboard a train bound for London on Saturday night (1 November).
Police were alerted to an attack onboard a London North Eastern Railway (LNER) service bound for King's Cross, which resulted in 10 people being taken to hospital, with nine suffering life-threatening injuries.
It was reported that police used a Taser on a man holding a knife, with two suspects being arrested in the aftermath.
Counter Terrorism Police have since joined the investigation, after more than 30 officers made their way to Huntingdon station in Cambridgeshire after calls from those onboard the service.
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As of this morning, the train remains at the platform after its emergency stop last night, with roads around the station closed as forensic tents have been put up near the scene, report the BBC.
Latest police update
The British Transport Police revealed earlier this morning that two people remain in a life-threatening condition after being stabbed on a train near Huntingdon.
British Transport Police Superintendent John Loveless stated that there is nothing to suggest that the stabbings were a terrorist incident.
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The two men who have been arrested on suspicion of attempted murder over the Huntingdon train stabbings have been revealed to be a 32-year-old black British national and a 35-year-old British national of Caribbean descent, the authorities added.
Where did it happen?
The stabbing took place onboard the 18:25 London North Eastern Railway (LNER) service bound for King's Cross from Doncaster on 1 November, in an incident which is said to have lasted between 10 and 15 minutes.
Passengers reported that at least one person used a knife to stab people as the train made its way through Peterborough, with armed police boarding the service shortly after its emergency stop in Huntingdon.
Arrests made
Two people were arrested by authorities, earlier confirmed to be a black British national and a British national of Caribbean descent.
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Eyewitnesses recalled that people were hiding in toilets for their safety, while others recalled that some passengers were bloodied and wounded from being attacked.
Emergency crews subsequently took 10 people to Addenbrookes Hospital in Cambridge, with nine initially said to be suffering life-threatening injuries, according to an official statement from British Transport Police.
What have eyewitnesses said?
It was heard that passengers were trampling over each other to get to safety, as an eyewitness known as 'Gavin' told Sky News: "The armed police were pointing to the suspect as we came off the train. Police were shouting 'get down, get down!'
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"He (a suspect) was waving quite a large knife. They detained him. I think it was a Taser that got him down in the end."
The witness remembered someone saying they had been stabbed on board while getting away from the suspects being 'extremely bloodied', as they 'were basically on the floor' by the time the train stopped.
"That person ended up collapsing on the floor. They were taken to an ambulance pretty much straight away," he added.
Speaking to the BBC, eyewitness Olly Foster said someone shouted 'run, there's a guy stabbing literally everyone and everything', and while he thought it was a Halloween prank, he saw an older man with gashes on his head and neck allegedly blocking the attacker from stabbing a younger girl.
Wren Chambers was also onboard the train, remembering one person who had been stabbed in the arm, while London Underground worker Dean McFarlane recalled seeing people running down the Huntingdon platform while bleeding, with one man 'completely covered in blood'.
What have police said?
A statement was released by British Transport Police in the early hours of Sunday morning, confirming that they responded to reports of a stabbing.
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"We can confirm that at 7.42pm today (1 November) British Transport Police were called to reports of a multiple stabbing on board the 6.25pm train service from Doncaster to London King’s Cross," it began.
The statement went on: "Officers immediately attended Huntingdon station alongside paramedics.
"Armed police from Cambridgeshire Police boarded the train and arrested two people in connection to the incident who have been taken to police custody."
Chief Superintendent Chris Casey explained that they are 'conducting urgent enquiries' before confirming any other details, adding:
"At this early stage it would not be appropriate to speculate on the causes of the incident.
“Our response is ongoing at the station and will be for some time. Cordons are in place and trains are not currently running through the area, and there are also some road closures."
Responses from public figures
Prime Minister Keir Starmer took to X, writing: "The appalling incident on a train near Huntingdon is deeply concerning.
"My thoughts are with all those affected, and my thanks go to the emergency services for their response.
"Anyone in the area should follow the advice of the police."
The Mayor of Cambridgeshire and Peterborough, Paul Bristow, stated: “Hearing reports of horrendous scenes on a train in Huntingdon, Cambridgeshire.
“Cambridgeshire Police are at the scene and two people have been arrested.
“Thoughts and prayers with everyone affected.”
LNER Managing Director David Horne said he was aware of an incident on one of the trains, adding: "Our immediate concern is for the welfare of our customers and crew who are on board. My thoughts are with the victims."
He said that information is being gathered at the moment, with updates to follow.
Home Secretary Shabana Mahmood said she was getting regular updates on the ongoing investigation, urging people to 'void comment and speculation at this early stage.'
Joshua Nair