Investigative teams reported on Monday the discovery of the Cockpit Voice Recorder (CVR), the second "black box" of the Air India flight that crashed last Thursday in the Indian city of Ahmedabad, with 242 people on board.

Official confirmation that both black boxes had been located and secured It came after Prime Minister Narendra Modi’s Principal Secretary PK Mishra visited the disaster zone, PTI reported. “The AAIB [India’s Air Accidents Investigation Bureau] has initiated a detailed investigation and the US National Transportation Safety Board (NTSB) is conducting a parallel probe under international protocols as the aircraft is of US manufacture,” Mishra said in a statement. The CVR discovery comes three days after the Flight Data Recorder (FDR), the other black box that records the plane’s technical parameters, was recovered from the roof of a building in the crash zone on Friday. Last Thursday, June 12, Air India flight AI171, a Boeing 787 Dreamliner, had just taken off from Ahmedabad bound for London and crashed just one minute after the pilot declared an emergency.

The Cockpit Voice Recorder (CVR) contains conversations in the cockpit and sounds that could shed light on the cause of the crash that left more than 270 dead. With the recovery of both devices, investigators now have all the flight information to reconstruct the aircraft's final moments.