An 11-year-old boy from Northamptonshire has died after he was found with serious injuries at Daventry International rail freight depot.
The youngster suffered serious electrical burns and was discovered shortly before 5.20 pm, by British transport police.
A police spokesman said: “Upon arrival, a young boy was discovered at the scene with serious electrical burns.
“Paramedics, including the air ambulance, worked on the young boy but he was sadly pronounced dead at the scene.
“His death is being treated as unexplained whilst extensive enquiries are made to understand what happened.”
Detective Inspector Gareth Davies added: “Our thoughts are with the family of this young boy during what must be an incredibly difficult time.
“I have specially trained officers supporting the family as they try to come to terms with this awful news.
“Our focus is now fixed on understanding exactly what happened and how this young boy came to receive these awful injuries.
“Therefore, I would be looking to hear from anyone who may have seen a young boy enter this depot at around 5pm.
“If you were in the area or have any information, no matter how small, please do get in touch as soon as possible.
“The family will be desperate for answers and we will be working tirelessly to get them answers they will be seeking.”