Meanwhile Secretary of State Mike Pompeo has told CNN that he saw all the intelligence held by the USA on the killing and said there was no direct evidence linking Prince Mohammed to the murder.
Erdogan also demanded again on Saturday that Saudi Arabia extradite the suspects in the slaying, saying that a trial in the kingdom was not satisfactory.
Erdogan also said that Khashoggi's murder was not officially discussed at the summit, and that Canadian Prime Minister Justin Trudeau was the only leader to bring up the issue. He said Ankara has shared this evidence with all countries who requested it, including the United States, Britain, Germany and Saudi Arabia.
Erdogan said the Saudis have refused to help Turkish prosecutors with information on the whereabouts of Khashoggi's body and the identities of accomplices said to have supported the visiting Saudi hit squad.
He said Crown Prince Mohammed had given world leaders at the G20 summit an "unbelievable explanation" of the situation, by arguing that Saudi Arabia could not be blamed unless the crime was proven.
"There's no direct evidence linking him to the murder of Jamal Khashoggi", Pompeo told CNN.
Steph Curry's incredible response to nine-year-old girl's letter
The shoes have since been rebranded in the girls section of UA's site as "Grade School UA Curry 5". He also invited her to join him at a special ceremony on International Women's Day on March 9th.
The Trump administration's reluctance to acknowledge reports from the justice community stands in contrast to calls for a U.S. response from lawmakers including Senate Majority Leader Mitch McConnell, who demanded action for Khashoggi's death, which he called "completely abhorrent to everything the United States holds dear and stands for". "It remains an important relationship, and we're aiming to keep that relationship with the Kingdom of Saudi Arabia".
"Right now, we do not have a smoking gun", he said, noting that he had seen all the latest intelligence in the matter as of Friday. "We certainly need to continue to explore. all aspects of the murder and find anyone who was involved, but that should not in any way dissuade us from basically confronting Iran", which the Trump administration views as its major adversary in the Middle East and one that Saudi Arabia is essential to confronting.
Jamal Khashoggi went missing after entering the Saudi Consulate in Istanbul on October 2.
Killing of Saudi journalist Jamal Khashoggi in Istanbul has been a test for many countries, President Recep Tayyip Erdoğan said at a press conference at the G20 summit Saturday. "But his own officials have admitted that this was a planned operation".
President Donald Trump, who has been accused of covering for the Saudi leadership, appeared to challenge that assessment about the prince, saying "maybe he did, maybe he didn't". Al-Qahtani was sanctioned by the White House last month for his involvement.
Last week, in a rebuke of Saudi Arabia and the administration's handling of the Khashoggi case, a majority of the Senate voted to advance a measure to end U.S. military support to Saudi Arabia for its war in Yemen against Iranian-backed militants.