Tube passengers screamed in terror as a window on a train "exploded" in north London today.
Shards of glass flew across the Piccadilly Line carriage when a window spontaneously blew out as the train travelled from Turnpike Lane to Manor House station, witnesses said.
No-one is believed to have been hurt in the incident, but a passenger claimed people would have been "severely injured" if the train was busier when the blast happened at around 3.30pm.
Professional nanny Sarah Whiteman, 23, told the Standard: "There was a massive bang. I screamed, everyone looked bemused [and] the shards of glass shattered onto the floor.
"It was really weird. Everyone was doing their own thing, there were only six or seven people in that carriage, and then there was a humongous bang and I screamed. The window had just blown out, and glass hit my foot."
She added: "Everyone just looked at each other - no one actually spoke," before joking that Londoners "don't speak on the Tube".
Transport for London said it was investigating the incident.
A spokesman said: "A Piccadilly line train was taken out of service after a window at the end of a carriage was reported to have been smashed. No injuries were reported and we are investigating the full circumstances surrounding the incident.”
Ms Whiteman said she thought the incident could have been caused by high pressure underground, adding that the train was "quite old".
