U.S. safety officials said they are heading to India to assist in the investigation of the accident.

“Thrust not achieved... falling... Mayday! Mayday! Mayday!” the pilot said moments before the aircraft began losing height and erupted in a fireball.

Viswashkumar Ramesh, a British national of Indian origin, was on the flight headed to London that crashed minutes after taking off from India’s northwestern city of Ahmedabad on Thursday afternoon.