A 34-year-old man has died in hospital, four days after falling through a skylight at a Wrexham store.
The Comet store in Mount Street, Wrexham, where the man fell
He was taken to the town's Maelor Hospital on 7 June, had initial treatment for a suspected broken collar bone, and was discharged.
The Health and Safety Executive (HSE) said he was re-admitted on 11 June for planned surgery, but died while being prepared for treatment.
The HSE said it was making "initial inquiries" with North Wales Police.
The name of the man, from Wrexham, has not been released. He was a contractor working at the Comet store in Mount Street.
An HSE spokeswoman said it was awaiting the results of a post-mortem examination to see if the death was related to the accident, before deciding whether to investigate further.
North Wales Police said: "We are working in partnership with the HSE to ascertain what happened.
"A Home Office post-mortem will be arranged to clarify the cause of the death."
In a statement, Comet said: "Following the incident on 7 June we would like to extend our deepest sympathies to the family of the deceased.
"Our thoughts are with them at this difficult time."