Family and friends of Jamal Khashoggi have said funeral prayers in both Saudi Arabia and Turkey for the Saudi journalist who was killed by agents of his own government.
The Saudi public prosecutor has said it will seek the death penalty for five suspects in the October 2 murder, which happened inside the country's Istanbul consulate.
They did not provide names but at least two are senior officials closely associated with Crown Prince Mohammed bin Salman.
In an unusual measure against an important security and economic partner, the US Treasury has imposed economic sanctions on 17 Saudis, including Saud al-Qahtani, the crown prince's former top adviser.
Riyadh maintains that Prince Mohammed had nothing to do with the murder, even as Turkey and some Western allies, including US President Donald Trump, have said ultimate responsibility lies with him as the country's de facto ruler.
Changing Saudi accounts of the murder, including initial denials, have been met with scepticism abroad.
Tens of thousands of worshippers at Mecca's Grand Mosque and the Prophet's Mosque in Medina, Khashoggi's hometown, joined in prayers for the deceased on Friday, though the imams did not name him.
In Istanbul, mourners raised their hands in prayer outside Fatih Mosque.
An imam recited Koranic verses under a tent set up to protect against the rain, and Khashoggi's friends eulogised him.
"What we heard yesterday from the Saudi public prosecutor is not the justice we were expecting or waiting for, but represents injustice itself," said Ayman Nour, a liberal Egyptian politician.
An adviser to Turkish President Tayyip Erdogan called for Prince Mohammed to distance himself from the legal proceedings.
"There is no chance to have a court proceeding that is independent from the crown prince in Saudi Arabia," said adviser Yasin Aktay.
For weeks, Khashoggi's family has urged Saudi and Turkish authorities to find his remains and hand them over for burial, but the Saudi prosecutor said their whereabouts are unknown.
The decision to hold prayer services in the absence of a body suggests the family does not expect it to be recovered.
Khashoggi's son Salah met the king and crown prince in Riyadh last month to receive condolences along with other relatives.
He then departed for Washington after a travel ban was lifted and told CNN on November 5 that he wanted to bury his father in Medina with the rest of the family.
"We just need to make sure that he rests in peace," Salah said. "Until now, I still can't believe that he's dead. It's not sinking in with me emotionally."
Khashoggi's fiancee, Hatice Cengiz, a Turkish researcher who had waited outside the Istanbul consulate for hours on the day he was killed and alerted the authorities and the media when he never left the building, called last week for Muslims around the world to perform the funeral prayer for him.
