AHMEDABAD, India (AP) — Indian investigators on Friday recovered the digital flight data recorder, or the black box, of the Air India flight that fell from the sky and killed 241 people on board and several people on the ground, authorities said.

An investigation is underway as to what caused an Air India airliner carrying 230 passengers and 12 crew members to crash shortly after takeoff on Thursday.

Tragedy struck this week when a plane crashed in the city of Ahmedabad just shortly after takeoff, leaving investigators and aviation officials with many questions.