Pilot Alan Montoya and co-pilot Jesús Juárez were at the controls of the Learjet 55 as they flew a young girl , who had just received “life-saving care” from a Philadelphia hospital, and her mother home to Mexico, according to the outlet Milenio.

Investigators have also located the aircraft's black box, CBS reports. It could provide clues into the cause of the crash.

Five people remain hospitalized Sunday after a medevac jet carrying a child patient and her mother crashed into a residential neighborhood in Philadelphia Friday night, killing seven people and leaving dozens injured.