An interim report into the Cumbria train crash is due to be published.Faulty points have emerged as the most likely cause for the accident which killed an elderly passenger.Margaret Masson, 84, from Glasgow, was killed when the train derailed and rolled down an embankment near Kendal, Cumbria. Eleven people, including the driver, remain in hospital.It has also emerged that two signal workers are expected to be questioned over the crash.The Rail Accident Investigation Branch (RAIB) said the focus of its preliminary examination was a pair of points "to the south of where the train came to a halt".A RAIB spokeswoman said: "The RAIB will publish an interim report on the first 48 hours of the investigation."It will outline the established facts of the incident and any initial findings. Any other information will be made available as appropriate."Around 700 points checks were completed as investigators appeared to focus on work carried out in the lead up to the crash, which involved a Virgin Pendolino train.Network Rail chief executive John Armitt revealed that an inspection took place on the stretch of track in question about three weeks ago, around February 3.But it is still not clear if another inspection had taken place since.© Independent Television News Limited 2007. All rights reserved.