Pune, June 29 -- The Aircraft Accident Investigation Bureau (AAIB) is investigating all possible causes, including sabotage, behind last month's Air India crash in Ahmedabad that killed 274 people on board and on the ground, Minister of State for Civil Aviation Murlidhar Mohol has said.

The black box of the ill-fated London-bound Air India flight AI 171, which crashed on June 12, is in the custody of AAIB and will not be sent overseas, the minister added.

The Boeing 787-8 Dreamliner crashed just seconds after taking off from Ahmedabad's Sardar Vallabhbhai Patel International Airport around 1.30 pm, killing all but one of the 242 passengers and crew on board.

The aircraft lost altitude shortly after takeoff and slammed into the resident...