The sister of a man who fell from a moving taxi told a crisis nurse she feared he was on the verge of doing something "catastrophic" days earlier.

Christopher Sidle died in hospital three days after an incident on the NDR, during which he was suffering a period of psychosis.

During the third day of an inquest into his death, the court heard his sister, consultant neurologist Katie Sidle, had expressed fears of what he would do on the day of the incident.

A transcript of a 50-minute telephone call between Dr Sidle and charge nurse Kwadwa Owusu-Ansah was read to the court, where the sibling desperately appealed for the 51-year-old to receive further support.

During the call, she told Mr Owusu-Ansah that her brother was displaying identical patterns of behaviour to previous periods of psychosis.

She said he was counting down to July 1, the day of the incident and expressed frustration that the Norfolk and Suffolk NHS Foundation Trust was not putting enough stock in his medical history.

She said: "I have no idea what he is planning to do but it seems to be catastrophic."

The call, on June 29, came the day after the same nurse carried out an assessment on Mr Sidle and judged that he did not require crisis treatment.

Giving evidence, Mr Owusu-Ansah told the court he had recently started in the role and that his assessment of Mr Sidle was the first he had done unsupervised.

Senior coroner Jacqueline Lake asked him whether he felt that with the benefit of hindsight his assessment lacked depth.

He replied: "Yes, that is fair to say."

She went on to ask whether there were red flags he could have picked up on that he did not and Mr Owusu-Ansah agreed that there were.

The inquest continues.

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