A 12-year-old boy has died after falling through the roof of a disused building on an industrial estate.
The youngster had reportedly been playing with friends when he plunged through a corrugated roof at the Lune Industrial Estate in Lancaster, shortly before 9.30pm on Monday.
The boy suffered serious injuries and was pronounced dead at the scene, said Lancashire Police.
Detective Inspector Simon Dent, of Lancaster CID, said: "This is a tragic incident which has cost a young man his life and our thoughts are with his family and friends at this time.
"We are now investigating the circumstances surrounding the fall.
"We understand that youngsters find sites such as this interesting and want to explore them but, as this incident shows, there are potential dangers of entering abandoned buildings and we hope parents will assist us by reinforcing that message to their children, especially during the school holidays."
The child's family are being supported by specially trained officers.
Any witnesses to the incident should contact Lancashire Police on 101 quoting log number 1390 of August 7.
