In a written response, Mojeb invited Fidan to Saudi Arabia to question the suspects and determine "the fate of the body" and establish whether the killing was premeditated, the Turkish prosecutor's statement said.
On Monday, Al-Muajab had an extensive meeting with Turkey's Chief Public Prosecutor Irfan Fidan at the Istanbul Caglayan courthouse. Turkish President Tayyip Erdogan had urged Saudi Arabia to disclose the facts behind the brutal murder including who ordered Khashoggi's murder and the location of his body.
His body was then immediately dismembered.
"Either the Saudi foreign minister or the 18 suspects must explain who the local co-conspirators are", Erdoğan said.
Khashoggi lived in self-imposed exile in the USA for the past year and wrote editorial columns for The Washington Post that were critical of Saudi Crown Prince Mohammed bin Salman, the kingdom's heir apparent.
The statement is the first public confirmation by a Turkish official that Mr Khashoggi was strangled and dismembered after he entered the Saudi Consulate on October 2 to collect paperwork needed to marry his Turkish fiancee. He was last seen entering the building of the Embassy of Saudi Arabia in Istanbul. But Turkish officials have told local media that the Saudi prosecutor has refused to share information and appears "primarily interested in finding out what evidence the Turkish authorities had against the perpetrators". Meanwhile, Saudi's Crown Prince has maintained that perpetrators responsible for the killing of Jamal Khashoggi will be brought to justice once the investigation is complete.
Khashoggi, who had become a frequent critic of the crown prince of Saudi Arabia, was in the consulate to obtain papers for his planned marriage.
"They're detained in Saudi Arabia, and the investigation is in Saudi Arabia, and they will be prosecuted in Saudi Arabia".
Under mounting pressure, Saudi Arabia changed its narrative about Khashoggi's killing several times, eventually admitting Khashoggi died inside the consulate.
The death of the Washington Post columnist and Saudi dissident continues to draw global outrage and demands for answers from the Saudi Royal Family. Turkey has yet to provide evidence.
Investigation of the incident suggests a special hit squad came to the consulate to kill Kashoggi and cover up the murder.