On Monday, Turkish media reported that the joint Saudi-Turkish working group on the issue held a meeting in the police department in Istanbul. After that Turkish police officers were allowed to enter the Saudi consulate in the city.
Khashoggi, a columnist for The Washington Post, went missing in Turkey on October 2. According to the journalist's fiancee, he was invited to the Saudi consulate but never left the consulate building. Media reported that Turkish investigators believe the journalist was murdered inside the consulate, but Saudi Arabia has claimed that Khashoggi went missing after he left the building and authorized access to the consulate for the Turkish authorities.
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A number of states, including Germany, France, Spain and the United Kingdom, have expressed serious concerns over the journalist's disappearance. US President Donald Trump on Saturday threatened to "punish" Riyadh if it was proven to be behind the suspected killing.