Turkey official says Saudi journalist's case won't go unsolved

Turkish authorities have concrete information on the disappearance of prominent Saudi journalist Jamal Khashoggi, who has been missing for six days, an official of Turkey's ruling AK Party who advises President Tayyip Erdogan said on Sunday.

Yasin Aktay told broadcaster CNN Turk that Khashoggi had not left the Saudi consulate in Istanbul, which he had entered on Tuesday to obtain documents for a forthcoming marriage, in "normal ways". The case would not go unsolved, Aktay said.

Late on Saturday, Turkish sources told Reuters that Turkish authorities believed Khashoggi had been killed inside the consulate last week, in what they described as the deliberate targeting of a prominent critic of the Gulf kingdom's rulers.