The prosecutor's office has concluded there is "strong suspicion" that Saud al-Qahtani and General Ahmed al-Asiri, both removed from their positions in October, were among the planners of Khashoggi's Oct. 2 killing at the Saudi consulate in Istanbul, the officials said. The move comes a day after senior U.S. senators said they were more certain than ever that Saudi Crown Prince Mohammed bin Salman was responsible for the killing, citing a CIA briefing. Turkish President Tayyip Erdogan has pushed to keep international attention on the murder - the order for which he says came from the highest levels of the Saudi government - even as U.S. President Donald Trump has said Washington should not take action that would undermine its relationship with the kingdom.