Scottish GP missing in aftermath of New Zealand earthquake
Allan Sinclair, originally from Uddingston, Lanarkshire, was believed to have been working in the medical practice at the Canterbury Television Building when it collapsed.
His distraught family have heard nothing from him since the earthquake struck last Tuesday.
Yesterday, his brother John, who works as a dentist in Coldstream in the Scottish Borders, said Allan had been reported missing.
"I have been in contact with my sister-in-law and it really doesn't look very promising," said Mr Sinclair.
"When the earthquake struck the building came down immediately so there is not an awful lot of hope."
Mr Sinclair said Dr Sinclair, his wife, Frances, and their two sons, Alistair, 17, and Harry, 14, moved to New Zealand seven years ago.
Before moving Allan had worked as a GP in the south of England.
It was reported earlier yesterday that the rescue team at the CTV building had abandoned their mission, saying there was no sign of life inside the building.
Yesterday, a New Zealand website paid tribute to Dr Sinclair.
Pharmaceutical rep Kelly Barber said: "Allan was a wonderful man. I visited him many times as a rep and he was always a very pleasant, polite and kind man with a sharp mind and a good sense of humour. He was a credit to his profession."
Police have said that more than 100 people may have been lost in the building.