Investigators have recovered the cockpit voice recorder (CVR) from the crashed Air India flight, a key step in uncovering what caused last week's deadly accident.

A Delhi-bound Air India Boeing 787-8 Dreamliner flight has been forced to turn back on Monday after the aircraft’s pilot said the jet was facing technical issues mid-air. The Air India flight, AI 315, was operating from Hong Kong to Delhi and had departed from the Asian city at 11.59am local time for its scheduled destination in New Delhi.

Air India flight AI315, a Boeing 787-8 Dreamliner en route from Hong Kong to Delhi, was forced to return mid-air due to a suspected technical issue. The aircraft landed safely back in Hong Kong. This comes days after another Air India Dreamliner-AI171,

The harrowing incident saw the London-bound Air India Boeing 787 Dreamliner plunge into a residential area in Ahmedabad, Gujarat, killing 241 passengers on board and another 38 people on the ground. Now, commercial airline pilot and crash analyst Steve Schreiber has pointed to fresh footage as a key breakthrough in understanding what went wrong.

Three days after the crash, only 35 bodies had been handed over to relatives from an overall official death toll of 270.

The Air India flight fell from the sky on Thursday and killed at least 270 people in Gujarat state, officials said Saturday.