Turkey says it has shared recordings related to the murder of the journalist and writer Jamal Khashoggi with the US, the UK, Saudis and others.
Turkish President Recep Tayyip Erdogan repeated his assertion that Saudi Arabia knew who had killed Khashoggi.
Khashoggi, a critic of Saudi rulers, was killed inside the Saudi consulate in Istanbul on 2 October.
Saudi Arabia has admitted he was murdered there, but denied suggestions its royal family was involved.
It had initially maintained the writer had left the consulate unharmed.
The Saudis have also denied comments allegedly made by Saudi Crown Prince Mohammed bin Salman describing Khashoggi to be a dangerous Islamist.
The reported phone call to the White House came before Saudi Arabia admitted Khashoggi had been killed.