Essex Police in IPCC probe over South Ockendon death
A police watchdog is to investigate whether "any use of restraint" by police caused the death of a man.
Although exact details have not been released, it is understood Essex Police were called to an incident in South Ockendon on 28 August.
Officers detained Andrew Moore, 45, in a nearby shop. He was taken to hospital by ambulance but died the next day.
The cause of death is yet to be established.
The Independent Police Complaints Commission (IPCC) is investigating the death and has urged witnesses to come forward.
The commission particularly wants to hear from anybody who saw Mr Moore making his way from Broxburn Drive to the shop in Broxburn Parade, or who witnessed his interaction with police and paramedics at the scene.
A spokesman for the IPCC said its inquiries would "examine the nature of Mr Moore's contact with the police and any use of restraint".
At the time he was arrested, Mr Moore was "bare-chested and bare-footed", the IPCC said.
IPCC Commissioner Mary Cunneen said:"A man has died in tragic circumstances and my thoughts are with his family and friends at this difficult time.
"We will be conducting a robust investigation into the nature of his contact with the police and the events leading up to his death."