Staff at Abu Dhabi Airport have been left in shock after a man with a passport saying he is 123 years old walked through the terminal.
Swami Sivananda's passport says that he was born on August 8, 1896, in Behala, India.
Mr Sivananda had been travelling from Kolkata to London with Ethihad Airways and had a stop off in Dubai.
If the date on his passport is correct, Mr Sivananda would be the oldest person to have ever lived.
The elderly man lost both parents before he was six and was given away by his relatives to a spiritual guru, whom he travelled with around India before settling in Varanasi.
It is hard to tell whether he actually is 123 because the only record of his age comes from a temple register.
It is certain that Mr Sivananda looks decades younger than his apparent 123 years, something that he puts down to yoga, discipline, and celibacy.
In 2016, he was reported on because of the date of birth on his passport and he said: 'I lead a simple and disciplined life. I eat very simply - only boiled food without oil or spices, rice and boiled daal (lentil stew) with a couple of green chillies.
Standing five feet two inches tall, Mr Sivananda sleeps on a mat on the floor and uses a wooden slab as a pillow.
'I avoid taking milk or fruits because I think these are fancy foods. In my childhood I slept many days on an empty stomach,' he said.
He has been trying to have his age and status confirmed by the Guinness Book of World Records for three years but due to difficulties in proving his age he is yet to enter the book.
Sivananda, who was born in colonial-era India without electricity, cars or telephones, says he is not enthused by new technology and prefers being on his own.
'Earlier people were happy with fewer things. Nowadays people are unhappy, unhealthy and have become dishonest, which pains me a lot,' he said.
'I just want people to be happy, healthy and peaceful.'
So far the oldest person ever was Jeanne Louise Calment from France, who reached the age of 122 years and 164 days.
The oldest person who is currently alive and recognised by the Guinness Book of World Records is Kane Tanaka of Japan, aged 116 years and 278 days.