Updated

The Latest on the killing of Saudi journalist Jamal Khashoggi (all times local):

7:00 p.m.

The U.N. human rights chief says international experts should help investigate the "shockingly brazen" killing of Saudi journalist Jamal Khashoggi and she also is urging Saudi Arabia to reveal the location of Khashoggi's remains.

Michelle Bachelet said she welcomed efforts by Saudi and Turkish authorities to investigate and prosecute the alleged perpetrators.

But Bachelet said Tuesday that because "high-level officials in Saudi Arabia were apparently involved" in Khashoggi's slaying, "the bar must be set very high to ensure meaningful accountability and justice."

In her strongest public comments yet on the subject, she said international experts should have complete access to evidence and witnesses.

She added: "I urge the Saudi authorities to reveal the whereabouts of his body without further delay or prevarication."

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11:55 a.m.

Saudi Arabia's top prosecutor has arrived , , arrived at Istanbul's main courthouse Tuesday for more talks with Istanbul's chief public prosecutor, , on the investigation into the killing,

Turkey's state-run Anadolu Agency reported that Saud al-Mojeb of Saudi Arabia and Turkey's Irfan Fidan were continuing a conversation they started with an hour and 15 minute meeting on Monday.

Riyadh and Ankara have agreed to cooperate in the investigation of Khashoggi's slaying inside the Saudi Consulate in Istanbul.

Al-Mojeb then went to the consulate and left after spending a little over an hour there.

Turkish President Recep Tayyip Erdogan said Tuesday the investigation needs to be completed swiftly.

Erdogan said the prosecutor repeated to his Saudi counterpart Turkey's extradition request for 18 suspects detained in Saudi Arabia for the Oct. 2 killing to be put on trial in Istanbul. Fidan asked al-Mojeb to reveal who sent this group, according to the president.

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11:15 a.m.

The fiancee of slain journalist Jamal Khashoggi has called on U.S. President Donald Trump and other leaders to ensure that his killing at the Saudi Consulate in Istanbul is not covered up.

Speaking at a memorial in London on Monday, Hatice Cengiz urged Trump to "help reveal the truth and ensure justice be served."

Cengiz also told the memorial that she wishes she had entered the consulate instead of her fiance.

She said in reference to an alleged Saudi hit squad sent to kill the Washington Post Journalist: "If only I knew that would be the last time I would see my JamaI, his smile, hear his laughter, I would have stood in front of that murderous team myself."

Khashoggi, who lived in exile, had written critically of Saudi Arabia's crown prince.