ISTANBUL — The UN investigator leading the inquiry into the killing of Jamal Khashoggi said in Turkey on Thursday she had not yet received all the information she is seeking, but still hopes to conduct a successful probe.

Khashoggi, a Washington Post columnist living in the United States, was killed on Oct. 2 at the Saudi consulate in Istanbul, where he had gone to collect documents for his planned wedding.

Agnes Callamard, the UN special rapporteur on executions who is on a week-long mission to Turkey, has held talks in Ankara and Istanbul with government ministers, intelligence officials and Istanbul’s chief prosecutor.

“We have had good meetings here, we are still a bit disappointed that we were not able to get all the information we requested related to the investigation,” she told reporters in Istanbul.

“But we are still hopeful that the authorities will be able to deliver on their commitment and hand over to us some of the information related to police investigation,” she said, adding she hoped to conduct “a full inquiry and a successful one.”

Callamard said she could publish her report by late May, although the date could change. — Reuters