A teenage boy has died after collapsing at an assault course, Surrey police have said.

Officers were called to Henfold Lane in the village of Beare Green, near Dorking, at 1pm on Thursday following a report that a 14-year-old boy had collapsed.

The boy died at the scene, an adventure site run by Camelot Events. The company provides outdoor activities including charity mud runs, survival skills, paintball, archery and raft building.

Surrey police said the death was being treated as unexplained: “At this stage, his death is not thought to involve any third party.”

Next of kin had been informed and a file would be passed to the coroner’s office in due course, Surrey police added.

Camelot Events said it was cooperating with the investigation. Lisa Edwards, operations manager, said: “This incident was not connected to the safety of the obstacle course.

“We would also like to clarify that, despite earlier reports, the child was not on an obstacle but was on dry land when [he] became unwell and collapsed.

“We have offered our deepest sympathies to the child’s family and the school, and our thoughts continue to be with those affected at this incredibly sad time.”

She added that staff had “worked tirelessly … to [try to] save the child”.