The Independent Police Complaints Commission says it will be looking into whether police officers should face criminal investigation after the death of 39-year-old Leon Briggs in custody.
At this stage we believe there is an indication that potential criminal offences may have been committed including gross negligence and/or unlawful act manslaughter, misconduct in public office, and/or offences under the Health and Safety at Work Act 1974".
"We will also be considering whether any potential disciplinary offences have been committed."
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Showers easing with clear spells overnight. Strong winds easing.
Sunday forecast: Heavy rain is expected for a time with gusty winds, then clearing during the afternoon.
March in the Anglia region has been much drier and sunnier than normal although temperatures have been around average.