Turkish president on Saturday said 15-member hit squad, who arrived at Saudi Consulate in Istanbul on October 2, "certainly knows" who killed journalist Jamal Khashoggi.
Khashoggi, a journalist and critic of Saudi Arabia's government, was killed after visiting the Saudi consulate in Istanbul to obtain a marriage license last month.
Khashoggi, who lived in Virginia and wrote columns for The Washington Post, was killed when he went to the consulate in Istanbul on October 2 to pick up a paper necessary to facilitate his wedding.
Nazif Karaman, head of investigation department at the Daily Sabah, a Turkish newspaper, said Saturday that people who killed Khashoggi put a bag on his head to strangle and suffocate him.
After repeated denials, Saudi Arabia finally admitted the 59-year-old had been murdered at the mission in a "rogue" operation.
Karaman did not elaborate on how the Saudi assassination team managed to dispose of Khashoggi's body, a question that remains unsolved in Turkey's investigation.
On the day of Khashoggi's disappearance, 15 other Saudis, including several officials, arrived in Istanbul on two planes and visited the consulate while he was still inside, according to Turkish police sources.
President Recep Tayyip Erdogan also told reporters that Saudi Arabia had to "act fairly" and disclose those responsible for the October 2 killing of The Washington Post journalist to rid itself of "suspicion". His body has not been found.
The fiancee of slain Saudi journalist Jamal Khashoggi has expressed "shock and sadness" over unconfirmed reports suggesting that his body may have been dissolved with chemicals.
Candles, lit by activists, protesting the killing of Saudi journalist Jamal Khashoggi, are seen outside Saudi Arabia's consulate, in Istanbul, Turkey, during a candlelight vigil, October 25, 2018.
"They killed you and chopped up your body, depriving me and your family of conducting your funeral prayer and burying you in Madinah as wished".
One said he had been told directly by Erdogan that the killers took 7.5 minutes to choke Khashoggi.
The official confirmation will increase the pressure on President Donald Trump and other Western leaders to demand accountability for the killing, specifically from Saudi Arabia.
Erdogan accused Saudi Arabia's chief prosecutor, who was sent to Istanbul last month as part of a joint probe, of employing "delaying tactics".
Saudi Arabia has rejected Turkish requests to hand over the suspects arrested over the killing.
Meanwhile, French President Emmanuel Macron and his United States counterpart Donald Trump agree that more details needed from Saudi Arabia on journalist Khashoggi's death, Reuters reported Saturday, citing French presidency sources.