ISLAMABAD - The eldest son of the murdered Saudi Journalist, Jamal Khashoggi, has arrived in the US from Saudi Arabia , with family members.
Salah Khashoggi had previously been unable to leave Saudi Arabia due to his father's criticism of the leadership.
Saudi Arabia 's public prosecutor is travelling to turkey on Sunday as part of the investigation.
Turkish President Recep Tayyip Erdogan announced the move in a televised speech, adding that the prosecutor would meet Istanbul's prosecuting authorities.
Erdogan said, turkey also had other evidence, which had not yet been disclosed.
And he called on Saudi Arabia to disclose the location of Jamal Khashoggi's body, as well as the name of an alleged "local co-operator" involved in disposing of it.
The Saudi Prosecutor, Sheikh Saud Al-Mojeb, said that the killing was premeditated, in a further development of the Saudi narrative.
Saudi officials have also blamed "rogue" agents as Riyadh has struggled to provide a credible explanation for how Jamal Khashoggi met his end.