A 12-year-old boy has died after falling through the roof of a derelict factory in Derby.
Emergency services were called to the disused Aida Bliss factory at about 7.30pm on Friday and found the boy critically injured inside.
He was later pronounced dead at Queen’s medical centre in Nottingham.
Police said he had been at the site with two friends, and officers believe there may have been other young people inside the factory at the time of the incident.
Ch Supt Jim Allen, Derby’s head of policing, said: “This is a tragic incident and our thoughts and sympathies go out to the young boy’s family.
“We have specially trained officers and staff offering them support at this unimaginably difficult time. We are also supporting the two friends, who are understandably distraught.
“Our investigation into the circumstances is ongoing, but I would urge anyone who was in the area, either passing by or in the building itself, to call us.
“If you were in the building at the time, you will not be in any trouble. We just need to speak to you as a witness as soon as possible, so please call us now.”
Anyone with information should call Derbyshire constabulary on 101, quoting reference 170003 86378.