Turkish President Recep Tayyip Erdogan said the killing of journalist Jamal Khashoggi was "planned" by Saudi officials.
"The Saudi authorities have taken an important step confirming the killing and now we ask Saudi authorities to work hard to reveal the names of those involved, from the bottom to the top," Erdogan said while addressing the Turkish parliament on Tuesday, according to Al Jazeera.
"There are also questions in every mind; why did those 15 people gather in Istanbul on the day they committed the crime and . according to instructions given to them by whom? We need to know," he added.
The Turkish President's announcement comes a day after he vowed to reveal the truth around Khashoggi's death.
Saudi Arabia's attorney general confirmed that Khashoggi had died as per preliminary investigations. At least 18 Saudi nationals have been detained by the kingdom's authorities, while various high-ranking officials have been ousted in connection with the case.
Jamal Khashoggi was last seen walking into the Saudi consulate in Istanbul, Turkey to obtain papers which would allow him to get married to his fiancee, Hatice Cengiz.
Saudi authorities later confirmed that The Washington Post journalist had died inside the consulate after a brawl, following which the royal family extended their condolences to Khashoggi's son, Salah Khashoggi, who is a resident of Jeddah.