A Network Rail employee has been arrested in connection with a high-speed rail crash in Cumbria in February that killed one passenger.
A police spokeswoman said a man (46) was arrested on Wednesday and released on police bail until October 31st.
A Virgin Pendolino tilting train, heading from London to Glasgow, derailed at 150km/h in the February 23rd crash in a remote area of Cumbria, scattering carriages down the side of a steep embankment.
The crash killed Margaret Masson (84) from Edinburgh, and 22 passengers were taken to hospital.
A preliminary report on the crash found that a set of points near the site of the accident had been faulty.
Network Rail chief executive John Armitt stated at the time of the report that his company accepted full responsibility.