A train driver had to slam on his emergency brakes to avoid killing a boy who was trespassing on tracks in Leicester.
British Transport Police (BTP) have released a photograph of a group of boys playing within metres of a the railway line near Western Park. The incident happened on Monday, June 17.
Police said they are very concerned about the group's actions and fear they do not fully understand the dangers of the railway.
Pc Rachel Morfett said: "Around 5.30pm, a train was travelling on the track next to Ashlyns Rise in Leicester.
"As the driver approached a foot crossing, he spotted a group of between six and seven youths by the tracks.
"With the train just 200 yards away, one of the youths ran out in front of it before moving."
Police said the driver was forced to apply the emergency brake. He managed to stop short of hitting the boy, who could have been killed or seriously injured.
The driver then took a photograph of the boys as the train passed before reporting the incident to police.
PC Morfett added: "This was an acutely worrying incident and I cannot overstate just how dangerous this sort of behaviour is. Although youngsters may think they are perfectly safe and can get out of the way of trains, they often fail to realise the true situation and the danger they are in.
"Trains can approach quietly and, if you are trespassing, often when you do hear an approaching train it can be too late to move out of the way. This is not somewhere for children to play."
Officers are appealing for anyone who recognises the boys, or knows their whereabouts, to get in touch.
Anyone with information can contact BTP on Freefone 0800 40 50 40, or text 61016, quoting B4/NEA of 24/06/2013.
