Saudi Arabia’s public prosecutor sentenced Monday five people to death over charges of killing journalist Jamal bin Ahmed bin Hamza Khashoggi.
Three other people have been sentenced to a total of 24 years in jail.
Fahrettin Altun, Erdogan's communications director, told Reuters that the series of "false denials" from Saudi officials had led to uncertainty on a host of issues around the case.
The first trial session of the 11 killers of Saudi journalist Jamal Khashoggi started on Thursday.
The Saudi public prosecutor has asked for the death penalty for five of 11 suspects held over the murder of journalist Jamal Khashoggi.
Administration of Donald Trump sought to persuade US lawmakers to maintain America's increasingly contentious backing of Saudi Arabia in the war in Yemen.
The Ministry of Foreign Affairs said on Thursday that it has been paying close attention to Saudi Arabia’s investigation into the murder of Saudi journalist Jamal Khashoggi.
U.S. President Donald Trump's administration is considering possible actions in response to the killing of Saudi journalist Jamal Khashoggi.
Turkey said on Tuesday it would search Saudi Arabia's consulate in Istanbul where Saudi journalist Jamal Khashoggi vanished last week.
Ahmed Saleh, the eldest son of the assassinated Yemeni President Ali Abdullah Saleh said Monday that he will lead the fight against Houthis.