A pathologist has been unable to conclude exactly how climber Aiden Webb was killed while scaling the Fansipan mountain in Vietnam in June.

The opening of the inquest into the 22-year-old's death at Norfolk Coroner's Court heard the medical cause of death was 'unascertained'.

Mr Webb, who was born in Norwich and lived in Attleborough, had set out alone to climb the country's highest peak on June 2, and a week later his body was found after a huge search and rescue operation was launched.

The former City of Norwich School pupil and Anglia Ruskin University graduate had been an accomplished climber, but concerns were raised when his family lost contact with him on June 3.

His family flew out to Vietnam to join in the rescue effort, but sadly his father, Trever, had to identify the body of his son.

Senior coroner for Norfolk Jacqueline Lake told the inquest Mr Webb had been a salesman by occupation.

'I understand he had been climbing and he was found dead at Sapa in Vietnam,' she said. 'A post-mortem has been carried out, and the medical cause of death has been given as unascertained.'

In late June, Mr Webb's girlfriend, Bluebell Baughan, shared the outcome of an investigation into his death, saying he had died after a fall.

'Aiden's body was found on June 9 by a team of seven comprising of Sapa police, military police and local men,' she said.

'An investigation was made following the recovery of Aiden's body.

'The findings show that around 7am on June 4 Aiden fell down a 18 metre waterfall. He died upon impact with the water of the plunge pool at its base.'

The full inquest into Mr Webb's death will be heard on October 4 at Norfolk Coroner's Court.