Inverkeilor derailment: Reward still being offered a year on
A £25,000 reward is still on offer for information that leads to the arrest of those responsible for a train derailment in Angus.
The CrossCountry Trains 08:04 service from Edinburgh to Aberdeen came off the rails at Inverkeilor on Sunday 4 November 2012.
Police are keen to trace four youths seen near the site at about 19:30 the night before the incident.
BTP said an obstruction appeared to have been placed on the tracks.
The youths ranged from 5ft to 5ft 6in tall. One was wearing a grey or light-coloured hooded top and trousers.
Police said the group were seen walking towards Bryanton House, just off the A92, on Saturday 3 November 2012. There was a bonfire in Inverkeilor that night.
They said it was important to trace the youths in order to eliminate them from their inquiries.
There were 36 passengers on board the train, which was travelling at 76mph, when it came off the tracks.
None of the passengers were hurt, but the 49-year-old driver suffered a minor head knock and was treated by ambulance crews.
Det Ch Insp Iain Miller, the officer in charge of the inquiry said: "Despite the time that has passed since the incident occurred I am still hopeful that someone will come forward with the piece of information that could help identify those responsible for such an irresponsible act."