A train has been forced to stop after it was struck by overhead wires.
The train was travelling between London and Southend when it ground to a halt near Rayleigh at about 08:20 GMT.
Passenger Delores McGurran said: "We saw some cables fall down and there was some loud crashing," she said. "It was really shocking."
Network Rail said the arm of the train that draws electricity had been damaged and that repairs were being carried out. Some services have been cancelled.
http://www.bbc.co.uk/news/uk-england-essex-31090365