CRI听力:Prosecutors: Co-pilot's Motive for Crash Not Clear

German prosecutors say the co-pilot accused of intentionally crashing a Germanwings flight last week into the French Alps was treated for suicidal tendencies before getting his pilot's license.

Authorities say Andreas Lubitz was being treated up until his death for an unspecified illness which resulted in him being told by his doctors he should be taking time off work.

Christoph Kumpa is a spokesperson for the Duesseldorf prosecutors' office.

"The co-pilot was, several years ago and before he got his pilot's license, for a longer period treated for suicidal tendencies. Since then, and until the end, there were further doctor's visits with sick notes, but there were no more diagnoses of suicidal tendencies or aggressive behavior."

Authorities have yet to come up with a possible motive.

Lubitz enrolled in training with Lufthansa, which owns Germanwings, in 2008 and became a pilot in 2013.

Unverified reports suggest he was diagnosed with a serious depressive episode in 2009 and received treatment for a year and a half.