Five days after an Air India plane crash in Ahmedabad claimed 270 lives, 162 victims have so far been identified through DNA matching and 120 bodies handed over to their families, a Gujarat minister said on Tuesday.

Investigators in India are studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week’s plane crash that left at least 270 people dead.

In the aftermath of the devastating Air India crash in Ahmedabad, authorities have identified 163 of the 270 victims through DNA matching. The crash resulted in 242 in-flight fatalities and 29 ground deaths.