A TERRIFIED commuter has revealed the horrifying moment a London Tube passenger was attacked with a "foot-long machete".
The man, in his 30s, said he feared he would be "hacked to death underground" after being trapped in the Jubilee Line carriage with the assailant.
British Transport Police (BTP) confirmed they attended reports of a stabbing at Green Park station at 6.47pm.
The victim was rushed to hospital and is in a stable condition, cops said.
The witness, who did not want to be named, said: "All of a sudden there was a huge commotion.
"A man stood in the middle of the carriage and brandished a foot-long black machete.
"People started screaming, there was a stampede to the front carriage - people got trampled on and pushed into the plastic and stuff."
He said he moved into the next carriage away from the attacker, adding that the victim had a wound on his head which he described as "a deep gash meaning the side of his head was hanging off".
He added that the driver was unaware of anything happening for 10 minutes because the intercom was not working, and passengers were left defenceless on the moving Tube as the attacker "taunted" them.
"The attacker went back down the train. We heard screaming but we don't know what happened," he said.
"He then came back and stood at the opposite end of the carriage taunting us and making out he was going to break down the door of the carriage.
"It was completely and utterly terrifying. For about 10 minutes I genuinely thought I would be hacked to death underground.
"However, people showed compassion and care to each other - people held other's hands, and a teenage boy saved his mum from being trampled."
The witness said the Tube train eventually stopped and armed police arrested the attacker, who did not resist them.
BTP said a man has been arrested on suspicion of inflicting grievous bodily harm, and that Green Park station remains closed.
Paramedics also attended the scene and took the victim to a nearby hospital.
'UTTERLY TERRIFYING'
Other passengers travelling the station described how cops sprinted across the platform before tackling the attacker in "scary" scenes.
Videos shared online show several police cars parked outside the busy station and crowds of people watching.
Another appears to show the man being arrested on the platform.
One witness said on Twitter that he appeared to have "blood-stained clothing".
Another said the detainee was a "machete-wielding maniac".
A spokesperson for British Transport Police said: "We are currently in attendance at Green Park Underground station following reports of a stabbing on-board a Jubilee Line service.
"Specialist officers have been deployed and the station remains closed while they attend.
"One person has been arrested in connection."
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Supt Mark Lawrie said the victim was "being cared for at hospital" and no officers were injured during the incident.
He added that the weapon had been recovered and praised the work of plain clothed officers.
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