On Friday, the wreckage was still scattered across the crash site, including the blackened wing of the plane, with large pieces of the aircraft stuck in buildings.

Investigators arrived at the scene and crowds were moved further away from the wreckage.

A doctor told the BBC that they are relying on DNA from relatives to identify the victims. A police official at the post-mortem room told the BBC that the remains of six people had been released to families so far, as their relatives were able to identify them based on facial features.

The sole survivor of the crash, British national Vishwashkumar Ramesh, who was in seat 11A on the flight, is still recovering in hospital.

"I still cannot believe how I made it out alive," he told India's state broadcaster DD News on Thursday.

"At first, I thought I was going to die. I managed to open my eyes, unfastened my seat belt and tried to exit the plane."

Mr Ramesh, 40, who sustained burn injuries on his left hand, said he saw the aircraft crew and its passengers die in front of his eyes.

Meanwhile, desperate families are still waiting for news of their relatives.

Imtiaz Ali, whose brother Javed and his family were on the flight, said that until he sees his brother's body, he will not believe he has died.

"If I get sad and start crying, then I'll be uncontrollable," he told the BBC.

"No-one will be able to stop me... my heart might burst."

The plane crashed in a residential area called Meghani Nagar and, even though it had just taken off, the impact was severe. Wreckage spread over 200m (656ft), according to responders.

It is still unclear exactly how many were killed on the ground, but the BBC has been told that at least eight people, who were not on the aircraft, have died.

Dr Minakshi Parikh, the dean of the BJ Medical College and Civil Hospital, said four of their students died as the plane crashed into buildings on the campus.

"There were also four relatives of our doctors who were on the campus when the aircraft crashed - they too were killed," Dr Parikh said.

"We are relying only on DNA matching to identify them and it is something where we simply cannot rush or afford mistakes.

"We are working with sincerity. We want relatives to understand, and be a bit patient. We want to hand over [the bodies] as soon as possible."

On Friday, Indian Prime Minister Narendra Modi spent around 20 minutes at the site of the plane crash.

He did not speak to reporters afterwards but a video posted on his YouTube channel showed him walking around the site and inspecting the debris.

Modi also visited the location of a now-viral image that shows the tail of the crashed plane lodged in a building.

Earlier on Friday, Air India CEO Campbell Wilson also went to the crash site, later describing the visit as "deeply moving".

According to data by tracking website, Flightradar24, the Boeing Dreamliner 787-8 had completed more than 700 flights in the year leading up to the Thursday's disaster.

The Air India plane was 11 years old and its most common routes included flights between Mumbai and Dubai, as well as the capital New Delhi and European destinations such as Milan, Paris and Amsterdam.

The plane had operated 25 flights from Ahmedabad to London Gatwick in the past two years.

India's aviation regulator, the Directorate General of Civil Aviation (DGCA), has ordered additional safety checks on Air India's Boeing 787-8 and 787-9 fleet, describing it as a "preventive measure".