Two Israeli officials with knowledge of the investigation identified the co-pilot as Omani national Hamam al-Hammami and said he told interrogators in the UAE that he planned the attack before joining flydubai.
A third source briefed on the UAE investigation said al-Hammami intended to crash the flight into Ben Gurion Airport near Tel Aviv. The same source said al-Hammami had operated a flight to Tel Aviv earlier this year and had intended to hijack and crash the plane then, but chose not to. It was not immediately clear why he changed his mind, although he is thought to have known someone on board the earlier flight.
All sources spoke on the condition of anonymity to discuss the ongoing investigation. UAE and Israeli authorities did not immediately respond to requests for comment, nor did flydubai.
On Monday night, RMIT University confirmed that al-Hammami was a student between 2015 and 2017, though he did not complete his undergraduate mechanical engineering degree.