A man choked after a drugs raid at a house in Blacon and died nine days later.
The 51-year-old man reportedly collapsed as officers entered the property in Wordsworth Crescent.
Paramedics managed to remove an object lodged in the man's throat and he was taken to intensive care at the Countess of Chester Hospital.
The man, who has not been formally named by police, died on Friday (December 5) after his life support machine was switched off.
Cheshire Constabulary have said that the man was not 'restrained in any way' during the raid and had not been 'formally detained by officers' when he started choking during the raid at 1.40pm on Wednesday, November 26.
His death has been referred to the Independent Police Complaints Commission (IPCC).
A statement issued by Cheshire police said: “On Wednesday, November 26, 2014, officers executed a warrant at an address in Wordsworth Crescent, Chester, at 1.40pm where two men were present.
“On entering the address officers became aware that one of the men inside the property had started choking. He collapsed and an ambulance was called immediately.
“The man had not been restrained in any way, nor had he been formally detained by the officers present. On arrival at the scene, paramedics treated the man and removed an object that was lodged in his throat.
"Paramedics then transported the man to the Countess of Chester Hospital where he was taken to intensive care.
“On Friday, December 5, the 51-year-old man died and the coroner was notified. A Home Office post-mortem was conducted on Sunday, December 7 and we are awaiting results of this. The cause of death has been withheld pending reports from the pathologist.
“Cheshire Constabulary had referred the matter to the Independent Police Complaints Commission (IPCC) prior to the man’s death, as is the norm when someone is seriously injured following contact with the police."
Following the raid a 50-year-old local man was arrested on suspicion of possession of Class A drugs and has been bailed pending forensic enquiries.
