India’s government is urgently inspecting all Boeing 787s after a devastating Air India crash that claimed at least 270 lives this week, the aviation minister said on Saturday, adding that the authorities were investigating all possible causes.

Indian authorities have ordered what they called “extended surveillance” of all Boeing 787 aircraft in the country’s fleet while they investigate the cause of Thursday’s crash of an Air India plane.

India aviation regulators said urgent safety checks would be carried out for dozens of Boeing Co. 787 jets in the wake of the Air India crash that killed all but one of the 242 people on board.