Officials said they had found the cockpit voice recorder that may provide crucial clues about what caused the Air India flight to crash, killing at least 270 people.

One passenger survived the crash of an Air India plane headed for London that killed at least 240 people Thursday in Ahmedabad, according to officials.

As anguished families wait for the return of their loved ones’ remains, tensions are mounting over the slow pace of DNA identification following the deadly Air India crash. More than three days on, only a fraction of the victims have been identified,