They are thinking it might have been suicide (oh wait, he's Muslim, can't be mental illness
).
Sources: Student Pilot Was Distraught, Fought With Instructor; Road Reopened

Sources: Student Pilot Was Distraught, Fought With Instructor; Road Reopened
Another source said the student pilot started flying the plane erratically and the instructor fought to gain control before the crash. The source said the student was distraught and feeling stressed over his poor performance at the flight academy.
A federal official told The Courant that the crash appears to have been a case of suicide, and that nothing had been found by Wednesday evening to suggest terrorism. The official said authorities expected to clear the crash scene Wednesday night, but that FBI agents in Chicago, where the father of the student pilot, Feras M. Freitekh, lived briefly in the city's suburbs, were expected to continue to look into his background.
"Unfortunately, this looks, at this point, like an individual who wanted to end his life and used this event to do it," the official said.
A federal official told The Courant that the crash appears to have been a case of suicide, and that nothing had been found by Wednesday evening to suggest terrorism. The official said authorities expected to clear the crash scene Wednesday night, but that FBI agents in Chicago, where the father of the student pilot, Feras M. Freitekh, lived briefly in the city's suburbs, were expected to continue to look into his background.
"Unfortunately, this looks, at this point, like an individual who wanted to end his life and used this event to do it," the official said.