At least three people have died after a train crashed into a station in New Jersey.
More than 100 people are believed to have been hurt, many of them critically, after the 'transit train' reportedly struck a wall after entering the station in Hoboken, allegedly going through ticket barriers and into the reception area.
A witness who was reportedly on the platform at the time of the incident told The Daily Telegraph the train collided with such force it derailed upwards into the air and hit the ceiling.
This may have been the cause of its partial collapse, as images circulating on social media show what appears to be a carriage twisted onto the platform, as well as debris from the roof and supporting pillars strewn across the ground.
An eyewitness told the BBC what he saw.
"I wasn't on the train, but I arrived just after it happened. There was water coming down off the roof and people climbing out through the windows.
"There were people sitting down with blood coming from their head. There were lots of injuries."