Zürcher Nachrichten - Toll of Air India disaster rests at 260 as focus turns to crash report

India's Aircraft Accident Investigation Bureau is leading the probe into one of the deadliest air disasters in decades -- with an initial report expected to be released on Friday, a month after the crash.

All but one of the 242 people aboard the Air India Boeing 787-8 Dreamliner were killed when it crashed on June 12.

It ploughed into housing just after takeoff in the western city of Ahmedabad, and authorities have also identified 19 people killed on the ground.

No details have been released about the probe, in which British and US air accident investigation agencies have also taken part.

But specialist website The Air Current, citing multiple people knowledgeable with the investigation, reported it had "narrowed its focus to the movement of the engine fuel switches", while noting that full analysis will "take months -- if not longer".

It noted that "the focus of the investigators could change during that time".

But it also said that, "at this point in the inquiry, the data available to investigators does not indicate a mechanical or design issue" with the 787 plane, or its engines.

The site said that its sources "indicated that post-accident analysis showed no sign of fuel contamination or improper retraction of the aircraft's flaps", over which there has been speculation as a contributing cause.

Health officials in the Indian state of Gujarat initially said that at least 279 people were killed, but forensic scientists reduced the figure after multiple scattered and badly burnt remains were identified.

"The final death toll in the plane crash now stands at 260," Rakesh Joshi, head of Ahmedabad's main state hospital, told AFP on Wednesday.

"All the human remains found so far from the crash site have been identified and handed over to their families," Joshi added.

"Our work is now over," he added. "We have matched DNA of all the mortal remains that were collected from the crash site".

The UN's International Civil Aviation Organization (ICAO) stipulates that states heading investigation must submit a preliminary report to the Canada-headquarted organisation within 30 days of an accident.

That report, however, does not have to be made public.

According to the ICAO, preliminary reports "may be marked as confidential or remain public at the investigating state's discretion".

N.Fischer--NZN