“One survivor is confirmed,” Dhananjay Dwivedi, principal secretary of Gujarat state’s health department, told AFP.
The person was being treated in hospital, he added without further details.
India’s Home Minister Amit Shah, who visited the crash site and then the hospital, said he was “pained beyond words by the tragic plane crash” in Ahmedabad, the main city in Gujarat state, where Shah is an MP.
But he also told reporters he had heard the “good news of the survivor” and was speaking to them “after meeting him”.
Indian media widely reported the survivor had been sitting in seat 11A, after videos shared on social media showed a man – in a bloodied T-shirt and limping, but walking towards an ambulance.
He shared a boarding card that named him as Vishwash Kumar Ramesh, a 40-year-old British national, one of 53 UK citizens on board.
AFP was not able to confirm the reports, but the BBC spoke to his cousin in the city of Leicester, Ajay Valgi, who reported that Ramesh had called his family to say he was “fine”.
Britain’s Press Association news agency also spoke to his brother, Nayan Kumar Ramesh, 27, also in Leicester.
“He said, I have no idea how I exited the plane”, his brother told PA.
Heartbreaking loss
But while Ramesh’s reported survival offered a chance of hope, stories also flooded in of heartbreaking loss: elderly parents going to visit children in Britain, or family returning home.
Air India is organising relief flights – one from the capital, New Delhi, and another from financial hub Mumbai – to Ahmedabad for “the next of kin of passengers and Air India staff”, the information ministry said in a statement.
They will have to take part in the grim task of identifying the bodies, many of which were reported to have been badly burned.
The plane, which was full of fuel as it took off for a long-haul flight to London, exploded into a burst of orange flame, videos of the crash showed.
Dwivedi, the health official, said DNA collection facilities had been set up at BJ Medical College in Ahmedabad.
“DNA testing arrangements have been made”, he told reporters.
“Families and close relatives of the flight passengers, especially their parents and children, are requested to submit their samples at the location so that the victims can be identified at the earliest.”
-Agence France-Presse