The Washington Post journalist was a fierce critic of the Saudi government, the Crown Prince, Mohammad bin Salman and the country's king, Salman of Saudi Arabia, after originally being close to the royal circles.
"No response has been received to date and the Public Prosecutor's Office is still waiting for an answer", the prosecutor's statement read.
A Saudi prosecutor is seeking capital punishment for five of the 11 suspects now detained over the death of Jamal Khashoggi in the Kingdom's Istanbul consulate last October.
In November, the Saudi prosecutor announced that 11 Saudis had been charged over the murder, with 10 others under suspicion and in custody.
The prosecution also said it was awaiting a response to two formal letters requesting evidence from Turkey, where Khashoggi was murdered inside the kingdom´s Istanbul consulate on October 2 in a case that shocked the world.
The grisly details of the killing created an embarrassing diplomatic scandal for Saudi Arabia, particularly for Crown Prince Mohammed bin Salman, who took steps to distance himself from it. USA intelligence officials have concluded that bin Salman ordered the killing, but President Donald Trump said Saudi Arabia is a strong ally and there's not enough evidence.
He had written columns critical of Saudi Arabia's powerful Crown Prince Mohammed bin Salman.
Turkish media did publish a list of 15 men who they say formed the hit squad, taken from documents they showed as they passed through passport control.
Aston Villa and Brexit go head-to-head - January 14th deadline
He's on loan for the season from Chelsea but can be recalled and then loaned out again in January. He is very happy and you can see the connection he has the supporters, the players and staff.
Outgoing defense secretary urges employees to "hold fast"
His views on strategic issues such as US alliances and the wars in Afghanistan and Syria are largely unknown to the public. Grant. "The call is also a courtesy, and a mark of respect for the incoming Secretary of Defense".
British PM Theresa May plugs her Brexit deal in New Year message
He said a deadlock in Britain's parliament, which means that it is unclear what shape Brexit will take, meant a solution was necessary.
The 59-year-old entered the consulate on October 2 as his fiancee waited outside, but a team of Saudi officials had flown in before his arrival and laid in wait for him.
The state-run Saudi Press Agency and state television gave few details about the hearing and did not name the suspects.
Khashoggi's body is believed to have been dismembered.
Ankara has demanded the suspects face trial in Turkey, but Saudi Arabia refuses.
Ankara had demanded that the suspects be extradited to face trial in Istanbul, and is calling for a United Nations probe into the killing.
Saudi then changed its story several more times before finally acknowledging that he had been killed in a act of premeditated murder. Human Rights Group Reprieve estimates 700 people have been executed in Saudi Arabia since 2014.
The Kingdom is creating three government bodies to increase oversight of its intelligence operations, a move that follows the killing of Khashoggi in its Istanbul consulate.