Turkish president, Recep Tayyip Erdogan, has claimed Saudi officials planned to murder journalist Jamal Khashoggi days before his death in Saudi Arabia's Istanbul consulate.
Addressing Turkey's Parliament, Mr Erdogan said he believed Saudi officials had started plotting against Mr Khashoggi in late September.
He said a "body double" wearing Mr Khashoggi's clothes was used as a decoy after the murder took place in October.
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Mr Erdogan called on Saudi Arabia's King Salman to allow the 18 suspects in the killing to be tried in Turkish courts, claiming diplomatic immunity was not "armour" for murder.
His comments contradicted Saudi accounts that Mr Khashoggi died accidentally in a "fistfight" in the consulate.
Addressing lawmakers of his ruling AK Party, Mr Erdogan said all those responsible for the killing must be punished regardless of rank - from the person who ordered his death to those who carried out the killing.
The Turkish president made no mention of an alleged audio recording of the killing which had been widely reported in the media.